eletricty puzzle

6. an electric current that reverses its direction many times a second at regular intervals, typically used in power supplies
8. a material or device that conducts or transmits heat, electricity, or sound, especially when regarded in terms of its capacity to do this
11. a flow of electricity which results from the ordered directional movement of electrically charged particles
12. an electric current flowing in one direction only
15. in particular of an electric or electronic circuit

1. the action of insulating something or someone
2. a device for making and breaking the connection in an electric circuit
3. a closed circuit in which the current divides into two or more paths before recombining to complete the circuit
4. the impeding, slowing, or stopping effect exerted by one material thing on another
5. the solid surface of the earth
7. a machine, especially one powered by electricity or internal combustion, that supplies motive power for a vehicle or for some other device with moving parts
9. a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids
10. 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
13. a container consisting of one or more cells, in which chemical energy is converted into electricity and used as a source of power
14. the SI unit of electrical resistance, expressing the resistance in a circuit transmitting a current of one ampere when subjected to a potential difference of one volt