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Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: For measuring the potential difference across a resistance of 600 Ω, the voltmeter with resistance 1000 Ω will be preferred over voltmeter with resistance 4000 Ω.
Reason R: Voltmeter with higher resistance will draw smaller current than voltmeter with lower resistance.
In the light of above statements, choose the most appropriate answer from the options given below

Asked in JEE Main 1st Feb 2nd Shift 2023 · Conversion to ammeter and voltmeter

• (1) Both A and R are correct and R is not the correct explanation of A.
• (2) Both A and R are correct but R is the correct explanation of A.
• (3) A is incorrect but R is correct.
• (4) A is correct but R is incorrect.

Step-by-step solution

Why the other options are wrong

• (1) Accepted A; a lower-resistance voltmeter disturbs the circuit more.
• (2) Accepted A; the 4000 Ω meter is preferred.
• (4) R is true: for the same voltage I = V/R is smaller for a larger R.

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