Current Electricity

JEE Main level, single correct, medium

58 of 380

Question 58 of 380

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 600Ω600\Omega, the voltmeter with resistance 1000Ω1000\Omega will be preferred over voltmeter with resistance 4000Ω4000\Omega.
Reason R : Voltmeter with higher resistance will draw smaller current than voltmeter with lower resistance.
In the light of the above statements, choose the most appropriate answer from the options given below

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Answer: (A) A is not correct but R is correct

Voltmeter is connected in parallel, so it should have very high resistance as to measure the potential difference, all the current should pass through the resistor and no current should pass through voltmeter for precise readings.
The current will divide and travel through the voltmeter if the voltmeter has a low resistance and will then give faulty readings.
Thus, A is not correct but R is correct.

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