Lesson plan, powerpoint, worksheet to be used during lesson and series problems with answers. Circuit rules an electron will not pass through every component on its way round the circuit. A series circuit is a circuit with only one loop a parallel circuit is a circuit with multiple loops rules of series circuits. What is the rule for potential difference in a series circuit. When walking, we dont normally notice we are moving through air as it offers such little resistance to our motion. When you put an ammeter into a series circuit the current is the same wherever you put the ammeter. Resistors in series and parallel in these lessons, we will calculate the voltage, current and resistance of several resistors in series and parallel. Parallel circuits series and parallel circuits eduqas.
Gcse science physics 91 current in parallel circuits youtube. Aqa gcse physics paper 1 series and parallel circuits. Series circuit connections are common and greatly employed in electrical equipments. Calculation of voltages and current in a series circuit if the supply voltage from the cell is 12 volts in the circuit below, what are the voltages across each resistor from the previous page, the total resistance is 9 ohms in a series circuit the current is the same everywhere the equation voltage current x resistance v i x r. Current and volatge in series and parallel circuit. Contains rules followed by questions on the differences between currentvoltage in series and parallel circuits. This article will show you how in just a few easy steps. The double lines between r1 and r2 is a symbol for parallel. Gcse physics science revision covering series and parallel circuits, current and voltage. Series circuits electric current and potential difference ks3. Determine the equivalent total resistance for each of the following circuits below. Gcse physics electricity how to calculate the current. In this video, we start looking at potential difference.
Series circuit rules chapter 1 useful equations and conversion factors pdf version. Series circuits you should have come across the difference between series. A gcse revision video designed to help you learn about how to draw circuits and components, understand circuit diagrams, explain series and parallel and how voltage and current change in each type. A parallel circuit is a circuit with multiple loops. Gcse science physics 91 current in parallel circuits.
Circuit components have various properties that can be measured and then used to make circuits for control and also circuits for testing other components. Gcse physics revision section of revision science covering series and. Components in a series circuit share the same current. For electrical charge to flow through a closed circuit the circuit must include a source of potential difference. In this simple series circuit the ammeter will give the same reading no matter where it placed in the circuit. Series and parallel circuits series and parallel circuits. By william kinsey hunker may earn compensation through affiliate links in this story. A series circuit is a closed circuit in which the current follows one path, as opposed to a parallel circuit where the circuit is divided into two or more paths. This video provides an overview of series and parallel circuits. Gcse physics electricity what is the total resistance. It contains plenty of examples, equations, formulas, and practice problems showing you how to solve it. Used with my top set year 8s, could also be for revision for ks4.
Resistors in series and parallel examples, solutions. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Learn gcse science with free interactive flashcards. Need to know how to calculate series resistance, parallel resistance, and a combined series and parallel network. The total resistance of a series circuit is equal to the sum of the individual resistances. When faced with a series circuit, remember the following rules. Series circuits electric circuits aqa gcse combined science. Series circuits how do series and parallel circuits work. However, a trend i have noticed in many students is the habit of memorizing rather than understanding these rules. Circuit rules an electron will pass through every component on its way round the circuit. Circuit components have various properties that can be measured and then used to make circuits for control and also circuits.
In a series circuit, certain general rules may be stated with regard to quantities of voltage, current, resistance, and power. Current in each branch adds up to the current from the battery. Terms in this set 42 current is the same everywhere. Teaching ks4 circuits a different approach teaching. Determine the total voltage electric potential for each of the following circuits below. Jun 08, 2017 gcse science physics 91 current in parallel circuits. The following diagram shows a circuit that has 2 parallel resistors in series with a third resistor. An ammeter will measure the same current wherever it is placed in the circuit. Usually, series circuits only contain two elements beyond the circuit breakera switch and the element controlled by the switch.
The tube filaments in small radios are usually in series. Series circuits rules of series and parallel circuits are very important for students to comprehend. Series and parallel circuit rules practice teaching. Feb 16, 2017 this website and its content is subject to our terms and conditions. Total resistance in a series circuit is equal to the sum of the individual resistances, making it greater than any of the individual resistances. Seriesparallel circuit rules flashcards in gcse physics. Choose from 500 different sets of gcse science flashcards on quizlet.
Series and parallel circuits gcse physics combined. The total resistance in a series circuit is the series of the resistors. Gcse science physics 91 potential difference in series circuits. This is because electrons are negatively charged and want to move away from the negative terminal and head towards the positive terminal. It will also help us see how the current, the resistance, and the voltage change in the circuit. Start simple and get harder as the sheet progresses, gets students to check their own work by using different methods for calculations. A voltage of 1v across a resistance of 1 ohm will cause a current flow of 1 amp, and the resistor will dissipate 1 watt all as heat the current entering any passive circuit equals the current leaving it, regardless of the component configuration. Even though there are multiple resistors, most of which are greater than 10. Total current in a parallel circuit is equal to the sum of the individual branch currents. In a series circuit, the current through each load is the same and the total voltage across the circuit is the sum of the voltages across each load. Start studying rules of series and parallel circuits. Parallel circuits series and parallel circuits eduqas gcse.
Electric current is the flow of electrons from the negative terminal to the positive terminal of a cell. Start studying physics aqa gcse 91 electricity topic. The physics classroom has prepared four different activity sheets to accompany dc circuit builder. How does stranger things fit in with physics and, more specifically, circuit analysis. This website and its content is subject to our terms and conditions. A series circuit is one in which the components follow one another in a line, the current must flow through each component in turn. What is a series circuit when components are connected one after another in a ring, the components are said to be in series with each other and the circuit is called a series circuit an example of a series circuit is shown above with three different resistors the current has only one single path to. Series circuit rules the series circuit rules show how to apply ohms law when the circuit has more than one device receiving electrical energy. Resistors in series and parallel examples, solutions, videos. Gcse scienceparallel and series circuits answers wikibooks. If you dont want to fry your circuit board, you do. The total current flowing from the cell towards the branches in the circuit must always equal the current flowing through each component in the branches of the circuit when they are added together.
Gcse physics science revision section covering circuits, electricity, current, voltage, resistance, current in a series circuit, current in a parallel circuit, voltage in a series circuit, voltage in a parallel circuit, resistance through components, charge in circuits and energy in circuits. Just a brief look at some of the most important equations you should use, and why you should label circuit diagrams in different colours as you work through solutions. Current controlling devices are always connected in series with the device that they protect. Do all this without the fear of being electrocuted as long as you dont use your computing device in the bath tub. Parallel circuit rules useful equations and conversion. Suitable for middle to higher ability ks4 classes but could be scaffolded for use with low sets.
A description of a series circuit for gcse physics. We look at whats meant by a series circuit and by an electric current. Students will work hard to memorize the rules without really. In the circuit above with three resistors, the total resistance r total is the sum of the values of the three resistors.
Firstly, students will be given the resistance rule for components in a series circuit, as well as the calculation to work out total resistance in a series circuit. Current electricity and conventional current gcse and a. Series parallel circuits if we combined a series circuit with a parallel circuit we produce a series parallel circuit. An electron will not pass through every component on its way round the circuit. Series and parallel circuits physics gcse revision. Series circuits are easy to construct, but because the current has to flow through all part of the circuit if one component fails the circuit will be broken and. Series and parallel circuit rules practice teaching resources. An example of a series circuit is shown above with three different resistors. Series circuits electric circuits aqa gcse combined. Rules of electrical circuit parallel and series circuit. In this video, were going to look at how to calculate the total resistance of resistors in series and parallel and then how to use this to calculate the current or potential difference in circuits.
Gcse physics electricity links for series and parallel. Bbc ks4 curriculum bites unit looking at topics in the double science curriculum, broken down into short chunks. Gcse science physics 91 resistors in series and parallel. The next part of the lesson focuses on the resistance of components found in series and parallel circuits. Found in many appliances in an around the home, series circuits are designed to perform only one main task. How to solve circuit problems a level physics youtube. Draw each circuit and try calculating the overall resistance of certain parts separately. Home gcse study tools physics seriesparallel circuit rules. Gcse physics electricity what is the total resistance in. Rules of series and parallel circuits flashcards quizlet. Total voltage in a series circuit is equal to the sum of the individual voltage drops. Identify a series and parallel circuit, state the rules for series circuits, apply the rules to a circuit and calculate resistance, explain why and apply to more complex circuits.
As a result of this they were all able to derive and explain the circuits rules vs in parallel are the same, vs in series add up to the battery voltage, current is the same everywhere in a series circuit, currents split at a junction, and answer gcse questions on circuits. Circuits gcse physics edexcel revision study rocket. Rules for series dc circuits the same current flows through each part of a series circuit. Tes global ltd is registered in england company no 02017289 with its registered office at 26 red lion square london wc1r 4hq. Compare and contrast series, parallel and combination circuits. Gcse science physics 91 current in series circuits. Learn about and revise how series and parallel circuits work and resistance in series and parallel circuits with gcse bitesize physics. Start studying aqa gcse physics paper 1 series and parallel circuits.
Any break in a circuit causes the whole thing to go down, so one faulty christmas tree light can cause the whole lot to go out and then how do you figure out which one blew. In national 4 physics examine the current and voltage in series and parallel circuits to formulate rules and determine unknown values. Series circuit rules useful equations and conversion. Gcse physics revision section of revision science covering series and parallel circuits. In circuit b we have resistors r 1 and r 2 combined to get. The total voltage across a series circuit is equal to the sum of the individual voltage drops. Series and parallel circuits gcse physics combined science. Physics aqa gcse 91 electricity topic flashcards quizlet. Electricity notes gcse physics this means that if you want a current to flow you must.
When components are connected one after another in a ring, the components are said to be in series with each other and the circuit is called a series circuit. There are two main types of circuits you need to know about and each has two rules that make calculations simpler. A series of free gcse igcse physics notes and lessons. They quantify how current flows through a circuit and how voltage varies around a loop in a circuit. This is a much bigger resistance than a parallel circuit using the same resistors. Series and parallel circuits gcserevision, physics. This physics video tutorial explains series and parallel circuits. The current stays the same everywhere in a series circuit. In a series circuit, if a lamp breaks or a component is disconnected, the circuit is broken and all the components stop working. Before reading this, please understand that resistors do not actually have an inside and an outside to them. The same current flows through each part of a series circuit. In a series circuit there is just one path so the charge flow is constant everywhere charge is not lost or. Isaac physics a project designed to offer support and activities in physics problem solving to teachers and students from gcse level through to university. The electrical current through each component is the same, as all the current has to flow through everything in the circuit.
Tutorials, tips and advice on gcse physics coursework and exams for students, parents and teachers. Learn about and revise electrical circuits, charge, current, power and resistance with gcse bitesize combined science. R1 and r2 are in parallel and r3 is in series with r1. Gcse science physics 91 current in series circuits youtube. If one of the bulbs is broken then current will still be able to flow round the circuit through the other loop. A series of free gcseigcse physics notes and lessons. Gcse physics science revision covering series and parallel circuits, current and voltage skip to main content. Links electricity series circuits revision questions. For components connected in series the following rules apply. Usually, series circuits only contain two elements beyond the circuit breaker. The current in a series circuit is the same in all part of the circuit. The current has only one single path to flow through. Gcse physics revision section of revision science covering series and parallel circuits, current and voltage. There is an equation for resistors in series, but it is not needed in gcse.
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