Question

Four bulbs $B_1,B_2,B_3,B_4$ of $100W$ each are connected to $220V$ main as shown in figure.
The reading in an ideal ammeter will be:

• A. $0.45A$
• B. $0.90A$
• C. $1.35A$
• D. $1.80A$

Answer 1

The correct option is C $1.35A$

$\begin{array}{c}Currentineachbulb=\frac{power}{voltage}=\frac{100}{220}=0.45A\\ Currentthroughammeter=0.45\times 3=1.35A\end{array}$

Hence,

option $\left(C\right)$ is current answer.