Question

Would any of the bulbs glow when the switch is in the 'off' position?

• A. Bulb $A$
• B. Bulb $B$
  
• C. Bulb $C$
• D. None of the above

Answer 1

The correct option is D None of the above

When the switch is in the 'off'. position, no bulb will glow as the circuit is incomplete and no current flows through the circuit.Also these bulbs are in series which means that if current through one lamp is zero , current through every lamp will be zero and no bulb will light up.

Correct option is (D).