The longer wire the more/less resistance, the lamp will shine more/less brightly ?
more, less
Fuses and circuit breakers prevent circuits carrying too much electricity. Explain how.
The fuse device contains wire which melts, and breaks the circuit when the current is too high.A circuit breaker has a switch which opens and breaks the circuit when the current is too high, and can easily be close again.
Materials which allow electricity to flow through them are called __________.
Materials which do not allow electricity to flow through them are called ___________.
