Question
A battery with internal resistance is connected to a parallel arrangement of two resistors and a switch S, as shown.
Initially, switch S is open.
What happens to the voltmeter and ammeter readings when switch S is closed?
▶️Answer/Explanation
Ans: A
Question
A student assembles the circuit shown.
Which row describes the state of the two lamps?
▶️Answer/Explanation
Ans: D
Question
A battery with internal resistance is connected to a fixed resistor, an ammeter and a voltmeter, as shown.
The battery is replaced by a different battery that has the same electromotive force (e.m.f.) but a greater internal resistance.
What happens to the readings on the ammeter and voltmeter?
▶️Answer/Explanation
Ans: A
Question
Which circuit symbol represents a microphone?
▶️Answer/Explanation
Ans: C