Electricity

3. The degree which a substance or device opposes the passage of an electrical current.
5. A stable subatomic particle with a charge of negative electricity.
9. An electrical current that reverses its direction many times a second.
11. A material or device that conducts or transmits heat, electricity, or sound.
15. A closed circuit in which the current follows one path.

1. A thing or substance used for insulation.
2. A closed circuit in which the current divides into two or more paths.
4. A container consisting of one or more cells, in which chemical energy is converted into electricity and is used as a power source.
6. A device for making and breaking the connection in an electrical circuit.
7. An electric current flowing in one direction only.
8. A machine powered by electricity.
10. A schematic diagram, in particular of an electric or electronic circuit.
12. The unit of electrical resistance.
13. The flow of electricity.
14. It’s the reference point in an electrical circuit from which voltages are measured.