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. Lesson this book is a textbook, not a laboratory or practical manual. Gcse physics electricity in the home high demand questions questionsheet 3 an electric kettle has a power rating of 2. Gcse physics electromagnetism 3 the electric motor. Current is represented by the symbol, i current is measured in amperes amps or a with an ammeter one amp is equal to the flow of. Magnets are materials normally with iron in them that produce a magnetic field. Physics 4 laboratory the electric motor dartmouth college. This magnetic force is produced because of the magnetic field which is due to the permanent magnet. The wire is pushed in the opposite direction if the direction of the current through it is reversed. Before discussing the motor effect it is important to gain an understanding in magnets and magnetic field. The magnetic force produces a torque which is responsible for rotating the coil.
When an electric current passes through a wire, it creates a magnetic field around the wire. The current in each branch will add up to the total current through the battery. The essence of the electric motor is an electro magnet. This gcse physics electricity quiz takes a look at the motor effect. This is where teaching and learning resources can be downloaded and added. Khanacademy physics show 10 more 6 marker aqa gcse 2015 physics p3 question aqa 91 physics paper 2 revision prioritiespredictions the motor effect gcse aqa physics paper 2 predictions 15th june 2018 91. The aqa gcse science textbooks are in the aqa approval process. They are all designed to transfer electrical energy into other forms of energy, but not all. Will need some activities to be added to be a full lesson. Today i am showing you how to make a very simple joule thief. Powerpoint has annotated answers to the worksheet questions. You will be provided with a kit of parts and equipment from which you will be challenged to build a working electric motor. What is an electric motor an electric motor is a device that transfers electrical energy into rotational energy.
This approach is based on the salters horners advanced physics shap project. The size of the electric current is the rate of flow of electrical charge. How a childrens book can teach writers about engaging storytelling. A split ring commutator sometimes just called a commutator is a simple and clever device for reversing the current direction through an armature every half turn see the previous page. A simple electric motor consists of the following parts. Voltage is a measure of how much electrical energy a certain amount of electrons can transfer as they flow. Electric motors higher a coil of wire carrying a current in a magnetic field experiences a force that tends to make it rotate.
When two magnets are placed close to each other, the magnetic fields affect each other produce a force. When the switch is closed the coil spins on its axle. The commutator is made from two round pieces of copper, one on each side of the spindle. Content additional notes from dr c electric current is a flow of electrical charge. Some of the material is first year degree standard and is quite involved for both for maths and physics. 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. Qes physics department ks4 electricity and magnetism 10 topic outline file. Students will construct electric motors, and through qualitative analysis. Teachers may select the approach that best meets the needs of their students. The following student books have been selected for aqas official approval process. To better understand, imagine the following situation. Gcse physics unit 1 revision book 2018 crickhowell high school. Student book edexcel international gcse 91 physics develop.
Physics motor effect question gcse standard the student room. Coiling the wire increases the strength of the magnetic field. Static and current electricity scool, the revision website. May 17, 2015 this website and its content is subject to our terms and conditions. Useful, wasted, power rating, watts course overview. Current this is a measure of the flow of electrons around a circuit measured in amperes or amps a voltage this is a measure of how much energy the electrons are carrying.
Axle in electric motors the commutator is attached to the axle. Physics assignment help, principle of electric motor, an electric motor is a device which converts electrical energy into mechanical energy. Place a currentcarrying conductor in an external magnetic field perhaps between two bar magnets, and the fields will push against each other. Measured in degrees o c or kelvin k thermal energy is measured joules j things are cold because the average energy is low things are hot because the average energy is high temperature. The frequency of the wooden bar is 2 hz and produces waves with a wavelength of 0. To make a cup of tea the kettle is switched on for three minutes. Take two bar magnets and keep the poles facing each other with a small space in between. Rotational energy is a form of kinetic energy electric motors have a wide variety of uses how does a simple electric motor work the catapult effect motor effect is used to make a. Gcse electricity revision of the motor effect in wires. Aqa gcse biology student book 97814718539 early 2016. In a motor, the wire is wound around a central block called an armature. Brushes the brushes connect the wire loop or armature to the power supply.
Electric motors electromagnets higher edexcel gcse physics. May 31, 2017 a gcse revision video designed to help you learn about the electric motor, force in a current carrying wire and interactions between magnetic fields. How to make a simple electric motor fun science, science. It consists of a rectangular coil of wire mounted on a spindle so that it can rotate between the curved pole pieces of a ushaped permanent magnet. It can be easy, particularly if you get the main terms right. Please practice handwashing and social distancing, and check out our resources for adapting to these times. Electric motor parts of motor, working of electric motor. Gcse physics electromagnetism medium demand questions questionsheet 12 a a simplified electric motor consists of a coil of wire connected to a battery and positioned between two magnets see diagram. A simple motor can be built using a coil of wire that is free to rotate between two opposite magnetic poles. Oct 12, 2014 an electric motor is basically a machine, which has only one job. The torque on the coil varies, being a maximum when the plane of the coil is in the same direction as.
Various energy sources can be used togenerate the electricity we need. Electric motors revision and coursework igcse physics. Please dont give me a page to read, just at most 23 paragraphs. The working of an electric motor is based on the fact that a current carrying conductor produces a magnetic field around it. These teaching approaches can be mixed to allow variety in course delivery. Current this is a measure of the flow of electrons around a circuit measured in amperes or amps a voltage this is a measure of how much energy the electrons are. The diagram shows a simple motor using direct current. Basic function of an electric motor is that its based on at least two magnets, which create rotational motion.
The simple electric motor physics homework help, physics. Alevel physics advancing physicsmotors wikibooks, open. In this invention the electric energy forces the matter to move. The motor effect place a currentcarrying conductor in an external magnetic field perhaps between two bar magnets, and the fields will push against each other. Learners find the action of a commutator difficult to apply in the d. Electric motor flemings fleming flemings left hand rule magnetism motion lorentz commutator force magnetic field. Tes global ltd is registered in england company no 02017289 with its registered office at 26 red lion square london wc1r 4hq. Apr 01, 20 in an electric motor the magnetic force does all the work. Khanacademy physics show 10 more 6 marker aqa gcse 2015 physics p3 question aqa 91 physics paper 2 revision prioritiespredictions the motor effect gcse aqa physics paper 2 predictions. Motors use the effect of forces on currentcarrying conductors in magnetic fields 1. Kelly the manual of free energy devices and systems, volume ii. Edexcel international gcse physics student book sample chapter. During a morning it is used five times to make cups of tea.
Jun 9, 2015 kids learn how to make a simple electric motor in this great engineering science fair project that teaches them how current generates its own magnetic field. Hsc physics tutoring at dux college provides students with the right support to achieve a band 6 result in hsc physics. An electrical motor is a device that converts electrical energy to mechanical energy. Current is needed to rotate the armature,when current is passed through electric motor,the flux linked with the coil changes passing through the magnetic field due to which armature begins to rotate. Efficiency of an electric motor calculation gcse keywords. Knowing how current, charge and power are calculated is extremely helpful in gcse physics when considering electrical circuits. How is electromagnetism used in our everyday lives.
If the magnetic field from the wire is placed in another magnetic field, they interact, causing the wire to move. Current, voltage and resistances the main problem with electricity is that everyone uses it all the time, so they think they know how it works already. Electric motors electromagnets higher edexcel gcse. This tutorial looks at the electric motor, flemmings left hand rule, electromagnetic induction, generators and transformers. Static and current electricity topic for gcse physics including revision notes, revision guides and question banks. The text that was researched and compiled contains explanations of the motor parts, theory about electromagnetism and how current is used to make an electrical motor rotate. It works on the principle of the interactions between the magnetic fields of a permanent magnet and the field generated around a coil conducting electricity. Download if you would like to download a resource then click on the relevant attachment at the bottom of the page. A simple electric motor uses current and permanent magnets. Construct a simple spectrometer, from a cd or dvd, and use it to analyse. In a simple electric motor each half is connected to the ends of the wire loop.
The catapult effect motor effect is used to make a simple electric motor spin round. From wikibooks, open books for an open world advancing physics. Gcse physics circuits high demand questions questionsheet 1 a in the circuit below, lamps p and q are identical. Electromagnets and motors flashcards in gcse physics. The strength of the magnetic field can be increased by the 3 c s. This website and its content is subject to our terms and conditions. The current is the flow of electrons through a wire. In an electric motor the magnetic force does all the work. Tes global ltd is registered in england company no 02017289 with its registered office at. We mustcarefully consider the advantages anddisadvantages of using each energy sourcebefore deciding which energy sources itwould be best to use in any particularsituation. Electricity notes gcse physics this means that if you want a current to flow you must put a battery in the circuit. The direction of the force will depend on the direction of the magnetic field and the direction of the current in the field. Commutator a commutator is a copper ring split in two halves. In everyday life, there is a wide choice of electrical appliances available to buy.
Electromagnetic induction electromagnets and motors gcse physics single science revision bbc. Hsc physics motors and generators notes dux college. Physics 4 laboratory the electric motor prelab exercise please read the procedure section and try to understand the physics involved and how the experimental procedure works. Finally, a comparison between different motors is presented. Armature or rotor this consists of a thin copper wire coiled around an iron core, hence when electric current flows it acts as an electromagnet. They attract other pieces of iron bought close to them with a magnetic force. A gcse revision video designed to help you learn about the electric motor, force in a current carrying wire and interactions between magnetic fields. When a current flows through a wire a magnetic field is produced, although the field produced is weak. The voltage is the force push or potential difference that pushes electrons around the circuit. Notice that as the coil rotates the forces on it remain the same but reverse in direction as the coil rotates and the current direction through the coil changes. Gcse science physics 91 the electric motor youtube. Current electricity is a flow of charged particles in all dry conductors the flow is of electrons electrons flow from negative to positive conventional current flows from positive to negative although conventional current doesnt really exist. Electric motor what is a split ring commutator a split ring commutator sometimes just called a commutator is a simple and clever device for reversing the current direction through an armature every half turn see the previous page the commutator is made from two round pieces of copper, one on each side of the spindle.
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