Question

Nidhi has two bulbs connected across two cells in a simple circuit. How can she make the bulbs glow dimmer?

• A. Replace one cell with a piece of chalk
• B. Replace one cell wtih a piece of wire
• C. Replace one bulb with a piece of wire
• D. Replace one bulb with another cell

Answer 1

The correct option is B Replace one cell wtih a piece of wire

To make the bulb dimmer:-

If we replace one cell with one piece of wire ,then voltage will decrease and we know that power $=\frac{{\left(Voltage\right)}^2}{Resistance}$

If the voltage decrease, power will decrease and it will make the bulb glow dimmer.