Question

4 bulbs marked 40 W, 250 V are connected in series with 250 V mains. The total power is

• A. 10 W
• B. 40 W
• C. 320 W
• D. 160 W

Answer 1

Answer: (A)

10 W

Answer 2

$P_{S} = \frac{P}{n} = \frac{40}{4} = 10W.$