Question

A circuit with a resistance of `6 Omega` has a fuse melts at `5 A`. Can a voltage of `18 V` be applied to the circuit without blowing the fuse?

Answer 1

Yes, it can be applied.

Explanation:

`"Current" = "voltage"/" Resistance"`.
i.e. `I =V/R`
So current in circuit `I` = `18/6` = `3` `A`.

Fuse capacity is `5` `A`. So it can be applied safely with out blowing fuse.