Question

In the circuit shown, battery, ammeter , and voltmeter are ideal and the switch S is initially closed as shown. When switch S is opened

A. equivalent resistance across the battery increases
B. power dissipated by left resistance R increases
C. voltmeter reading decreases
D. ammeter reading decreases.

Answer 1

Correct Answer - A::C::D
a., c., d.
When switch S is opened, parallel connection across battery
decrease. Hence, equivalent resistance across the battery
increases, power dissipated by left resistance R decreases,
voltmeter reading decreases and ammeter reading decreases.