Question

A circuit with a resistance of `9 Omega` has a fuse melts at `6 A`. Can a voltage of `18 V` be applied to the circuit without blowing the fuse?

Answer 1

Yes, its possible.

Explanation:

To answer, apply the resistance formula, and if `Current < 6`, it will work without melting:
`"Resistance" = "Voltage"/"Current"`
`9 Omega = (18 "V") /"Current"`
`"Current" = 18/9 = 2"A"`

So, it is possible, because the current will be `2"A"`.