Question

Two electric bulb A and B are rated 60 and 100 W, respectively. If they are connected in parallel to the same source, then

• A. both the bulbs draw the same current
• B. bulb A draws more current than bulb B
• C. bulb B draws more current than bulb A
• D. currents drawn in the bulbs are in the ratio of their resistances

Answer 1

The correct option is C bulb B draws more current than bulb A

Given $P_A=60W,P_B=100W$. We know that current flowing through the bulb is $I=\frac{P}{V}$. We also know that as both the bulbs are connected in parallel, potential difference (V) across both the bulbs is the same. Thus, $I\propto P$
Since the power of bulb B is greater than that of bulb A, bulb B draws more current than bulb A.