Assertion The resistance of an ideal voltmeter should be infinite. Reason The lower resistance of voltmeters gives a reading lower than the actual potential difference across the terminals.

Question

Assertion The resistance of an ideal voltmeter should be infinite. Reason The lower resistance of voltmeters gives a reading lower than the actual potential difference across the terminals. (A) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion (B) If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion (C) If Assertion is true but Reason is false (D) If both Assertion and Reason are false

Tardigrade Admin · Accepted Answer

An ideal voltmeter must have resistance infinity, so that all the voltage that it measures is across the terminals, instead of losing some in voltmeter circuitry.
Hence assertion and reason both are correct and reason is correct explanation of assertion.

Q. Assertion The resistance of an ideal voltmeter should be infinite. Reason The lower resistance of voltmeters gives a reading lower than the actual potential difference across the terminals.

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

If both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion

If Assertion is true but Reason is false

If both Assertion and Reason are false

An ideal voltmeter must have resistance infinity, so that all the voltage that it measures is across the terminals, instead of losing some in voltmeter circuitry. Hence assertion and reason both are correct and reason is correct explanation of assertion.

Q. Assertion The resistance of an ideal voltmeter should be infinite.
Reason The lower resistance of voltmeters gives a reading lower than the actual potential difference across the terminals.

An ideal voltmeter must have resistance infinity, so that all the voltage that it measures is across the terminals, instead of losing some in voltmeter circuitry.
Hence assertion and reason both are correct and reason is correct explanation of assertion.