Question

A circuit with a resistance of `6 Omega` has a fuse that melts at `8 A`. Can a voltage of `24 V` be applied to the circuit without blowing the fuse?

Answer 1

Yes; this will not blow the fuse.

Explanation:

Current (`I`) varies directly as Voltage (`V`) and inversely as Resistance (`R`)
`color(white)("XXX")I=V/R`

In this case
`color(white)("XXX")I=(24 v)/(6 Omega)= 4 ("volts")/(Omega) = 4 " Ampers"`

Since this is less than the maximum load that the fuse can handle,
the fuse will not be blown.