Question

Ravi connected three bulbs with the cells and a switch as shown. When switch is moved to ON position.

• A. The bulb X will glow first.
• B. The bulb Y will glow first.
• C. The bulbs Z and X will glow first.
• D. All the bulbs will glow simultaneously.

Answer 1

The correct option is D All the bulbs will glow simultaneously.

All bulbs will glow simultaneously and instantly without any delay. It is because the current is setup in the circuit the moment the switch is closed to provide it a closed path to flow. The three bulbs are in series, so equal current flows through all of them.