Question

A circuit with a resistance of `3 Omega` has a fuse with a capacity of `4 A`. Can a voltage of `16 V` be applied to the circuit without blowing the fuse?

Answer 1

`No`

Explanation:

Data:-

Resistance`=R=3Omega`

Voltage`=V=16V`

The fuse has capacity of 4A

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 `16V` across a `3Omega` resistor, therefore, the current flowing is

`I=16/3=5.333` `implies I=5.333A`

Since, the fuse has capacity of `4A` but the current flowing in the circuit is `5.333A` therefore, the fuse will melt. Thus, the answer to this question is `No`.