Question

An electric circuit consists of four identical bulbs connected in parallel to a battery of $25\text{V}$. If one of the bulbs is fused and the electric current through each of the other bulbs is $2.3\text{A}$, what is the net electric current flowing in the circuit?

Answer 1

Given:
Four electric bulbs connected to a battery in parallel.
The electric current flowing through each one of the bulbs is $2.3\text{A}$.
In a parallel electric circuit, the sum of the electric currents flowing through each of the bulbs is equal to the net electric current.
$⟹2.3\times 4=9.2\text{A}$

But, it is also given that one of the bulbs is fused. So, it will not work. Only three bulbs need to be considered.
$⟹2.3\times 3=6.9\text{A}$