Science Vocab

2. 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
4. an instrument for measuring electric potential in volts
7. the SI unit of electromotive force, the difference of potential that would drive one ampere of current against one-ohm resistance
8. the direction that electricity flows in
10. a roughly circular line, route, or movement that starts and finishes at the same place
11. A piece of metal with two poles that either attracts or repels different materials
12. protect (something) by interposing material that prevents the loss of heat or the intrusion of sound
14. an instrument for measuring electric current in amperes
16. a cylindrical coil of wire acting as a magnet when carrying electric current

1. opposite of negative
3. lead or guide to or around a particular place
5. negatively charged particle
6. a soft metal core made into a magnet by the passage of electric current through a coil surrounding it.
9. opposite of positive
13. a unit of measurement, measured by ammeters
15. Two types- AC and DC