Question

A circuit with a resistance of `6 Omega` has a fuse melts at `12 A`. Can a voltage of `100 V` be applied to the circuit without blowing the fuse?

Answer 1

Data:-

Resistance`=R=6Omega`

Voltage`=V=100V`

The fuse has capacity of 12A

Sol:-

If we apply voltage `V` across a resistor whose resistance is `R` then the current `I` flowing across it can be calculated by

`I=V/R`

Here we are applying voltage of `100V` across a `6Omega` resistor, therefore, the current flowing is

`I=100/6=16.667` `implies I=16.667A`

Since, the fuse has capacity of `12A` but the current flowing in the circuit is `16.667A` therefore, the fuse will melt. Thus, the answer to this question is `No`.