A) The 60 W light bulb has more resistance and therefore burns less brightly
B) The 60 W light bulb has less resistance and therefore burns less brightly
C) The 100 W bulb has more resistance and therefore burns more brightly
D) The 100 W bulb has less resistance and therefore bums less brightly
Correct Answer: A
Solution :
(a) The 60 W light bulb has more resistance and therefore burns less brightly When the same potential difference, that is the voltage, is applied as in houses, \[\text{Power}=Vl=\frac{{{V}^{2}}}{R}\] The smaller resistance consumes greater power. Here, 100 W bulb has less resistance. It should glow more brightly. The 60 W bulb has more resistance and therefore statement (a) is correct.
You need to login to perform this action.
You will be redirected in
3 sec
