Question

A circuit with a resistance of `6 Omega` has a fuse that melts at `8 A`. Can a voltage of `45 V` be applied to the circuit without blowing the fuse?

Answer 1

Current in circuit= voltage divided by Resistance
Voltage =45 resistance=6 ohms. So current is 45/6=7.5 amperes..

Explanation:

Rating of fuse 8 amperes.Actual current only7.5 amps.So it is safe.Fuse will not blow off.