A bulb of resistance 1 ohm is connected across a battery of 10 V. Find the power consumed.
10 W
100W
0.1 W
0.01W
Given, resistance of the bulb, R = 1 ohm; Potential difference across the battery, V=10 V
We know, power P=V2R=1001=100 W
When a bulb of resistance 1 Ω is connected across a battery, it draws a constant power of 400 W. What is the total power drawn when 4 such bulbs are connected in series across the same battery?