Fill in the blanks
1. ………… is a device used to protect buildings from the effects of lightning .
2. ………… is a species offish which can give electric shocks.
3. In series circuit, the current remains …………throughout the circuit.
4. ………… is used in extraction and purification of metals.
5. Copper wire offers very little ………… and does not get heated up quickly.
6. A fuse is a strip of alloy wire which is made of lead and tin with a very low …………
7. The flow of ………… per unit time is called current.
