Question

A light bulb is connected in series with a battery, a switch and some wires. However, the light bulb does not light up. What is/are the possible reason(s)? A. The battery is weak. B. The switch is closed C. The bulb has blown D. The wires are made of copper
A) A only B) A and C only C) B and D only D) B, C and D only

Answer 1

Answer:

A and C

Explanation:

Answer 2

The possible reasons for the bulb to not light up are A and C only (Option - B)

• The battery is weak enough to set the desired voltage difference across the bulb of a particular resistance for it to glow.
• The bulb may have blown or it may be a fused bulb disrupting or breaking the circuit resulting in no lighting of the bulb.
• switch being closed will allow the bulb to glow completing a closed circuit.
• An open switch will lead to a breakage in the flow of current and no lighting of the bulb.
• Copper wires are conductors and allow current to pass leading to a glowing bulb.