Question

Consider the closed circuit represented below. How will the ammeter and voltmeter readings change,
if the bulb burns out ? (Both meters are ideal)?

options are in image​

Answer 1

Answer:

option D

Explanation:

if the bulb burns out, it means the circuit is broken inside the bulb. so no current flows through it. so ammeter reading will go to zero.

whereas, the voltmeter will show the voltage across the battery(since the voltage drop across the ammeter is zero) . Voltmeter shows the se reading even if the bulb burns out.