Question

An electric bulb is rated $60W-220V$. Calculate the power consumbed by four such electric bulbs.

Answer 1

Step 1 - Given data

Power consumed by one electric bulb $P_1=60W$

Voltage $V=220V$

Step 2 - Finding the power consumed by four such electric bulbs

The power consumed by four such electric bulbs, say $P$, can be calculated as

$$\begin{gathered} P=4\times P_1 \\ P=4\times 60W \\ P=240W \end{gathered}$$

Final answer - Hence, the power consumed by four such electric bulbs is $240W$.