Question

Two electric bulbs A and B are designed for the same voltage. Their power ratings are P_A and P_B respectively, with P_A> P_B. If they are joined in series with a V-volt supply, then, (choose the correct option).

• A. A will draw more power than B
• B. B will draw more power than A
• C. The ratio of powers drawn by them will depend on V
• D. A and B will draw the same power

Answer 1

The correct option is B

B will draw more power than A

R = V²/P. the bulb with higher power rating has less resistance , and vice versa. When the bulbs are joined in series, they draw the same current. As P = i²R, the bulb with the lower power rating draws more power.