Year 8 Electricity and Magnetism

2. A positively charged particle found in atoms.
4. A component or machine that spins when a current flows through it.
7. How the variables in an equation are related to each other.
8. A region where a charged material or particle experiences a force.
11. A device for measuring electric current in a circuit.
14. A property of a material or particle that can be positive or negative.
16. A negatively charged particle found in atoms. Electrons flow through a wire when a current flows.
19. A region where there is a force on a magnet or magnetic material.
20. The extension of a spring is proportional to the force up to the elastic limit.
21. Describes an object or particle that has no charge, or in which positive and negative charges cancel out, giving no charge overall.
26. A material that conducts charge or energy well, such as a metal or graphite.
27. Make into a magnet.
29. Be pulled together, for example, opposite poles of a magnet attract and positive and negative charges attract.
31. Imaginary lines that show the direction of the force on magnetic material.
32. A rod of a magnetic material placed inside a coil to make the magnetic field of an electromagnet stronger.
33. The value of potential difference at which a cell or bulb operates.
34. A chemical store of energy, which provides the push that moves charge around a circuit.

1. A temporary magnet produced using an electric current.
2. A measure of the push of a cell or battery, or the energy that the cell or battery can supply.
3. Two or more electrical cells joined together.
5. Be pushed away from each other, for example, like magnetic poles repel or like electrical charges repel.
6. A neutral particle found in atoms.
9. The flow of electrical charge (electrons) around a complete circuit per second.
10. The pole of a magnet that points towards the north.
12. A material with a north and south pole that has its own magnetic field.
13. A material that is attracted to a magnet, such as iron, steel, nickel, or cobalt.
15. The charge on an electron, or on an object that has had electrons transferred to it.
17. A current through the air that produces light and sound.
18. The unit of resistance, symbol Ω.
22. Units of measurement of electric current, symbol A.
23. The charge on a proton, or on an object that has had electrons transferred from it.
24. A simple diagram to show different components in circuits.
25. Electrical device that uses current flowing through it in one circuit to switch on and off a current in a second circuit.
28. A material that does not conduct electricity or transfer energy well.
29. A neutral particle; everything is made of atoms.
30. A circuit in which there are two or more paths or branches for the current.