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Question 1

An ammeter and a voltmeter are joined in series to a battery. Their readings are A and V respectively. If a resistance is now joined in parallel with the voltmeter

(A) Both A and V will increase

(B) Both A and V will decrease

(C) A will decrease, V will increase

(D) A will increase, V will decrease

Question 2

Answer is (D) A will increase, V will decrease

Explanation:

When a resistance is joined in parallel with a voltmeter, the net resistance of the circuit decreases, hence the current increases. The potential difference across the ammeter increases (due to more current) and hence, potential difference across the voltmeter decreases (source EMF is constant).

kratos · Answer 1 · 2020-10-08T06:10:35+0000

Answer is (D) A will increase, V will decrease

Explanation:

When a resistance is joined in parallel with a voltmeter, the net resistance of the circuit decreases, hence the current increases. The potential difference across the ammeter increases (due to more current) and hence, potential difference across the voltmeter decreases (source EMF is constant).

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