Question

In a circuit having one bulb, another bulb is added in series with another. Then the bulbs will :

• A. Not glow
• B. glow but less brigtly
• C. glow more brightly
• D. get fused

Answer 1

The correct option is B glow but less brigtly

The relation between the brightness and the current is $Brightness\propto Current$

In a circuit, if one more bulb is added in series with the other, the net resistance of the circuit increases, and hence the current decreases.

Hence the bulbs will glow but less brightly.