Physics

6. A resistor whose resistance changes a lot over a small temperature range.
8. Coil of wire that becomes magnetised when a current flows through
9. currents flowing in a circuit.
11. The action of one body on a second body that causes its velocity to change.
12. Power supply in a circuit.
14. The SI unit of electric charge.
16. The SI unit of work or energy.
17. Device used to prevent e it.

1. Substance that transmits heat very poorly or does mot conduct electricity.
2. Electrical component that allows electric current to flow in one direction only.
3. Negatively charged particle which is smaller than an atom.
4. The speed of an object in a stated direction.
5. A substance that transmits heat or allows an electric current to pass through it.
7. Component in an electrical circuit whose resistance reduces the current flowing.
10. A device that provides a voltage in a circuit by means of a chemical reaction.
13. A coil of wire that, when a current flows in it, becomes a magnet.
15. The SI unit of electrical resistance.