A boy has two spare light bulbs in his drawer. One is market 220V and 100W and the other is market 240V and 60W. He tries to decide which of the following assertions are correct?

Options

A. The 60W light bulb has more resistance and therefore burns less brightly
B. The 60W light bulb has less resistance and therefore burns less brightly
C. The 100W light bulb has more resistance and therefore burns more brightly
D. The 100W light bulb has less resistance and therefore burns more brightly

Answer

A

Explanation

When the same potential difference, that is the voltage, is applied as in houses.
`"Power"=VI=(V^(2))/(R)`
The smallest resistance consume greater power. Here 100 W bulb has less resistance. It should glow more birghtly. This 60W bulb has more resistance and therefore statement (a) is correct.