Question

If we connect 2 bulbs of 50W and 100W in parallel then which will glow brighter?

• A. 50 W
• B. 100 W
• C. Both have same brightness
• D. Insufficient Information.

Answer 1

The correct option is B 100 W

We know that power of a bulb is inversely proportional to the resistance of the bulb, and when bulbs are connected in Parallel their potential difference remains the same.

Power $=\frac{V^2}{R}$. So bulb having lesser resistance will be brighter.