Question

The resistance of an ideal voltmeter should be infinite. 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

Answer 1

Answer: (A)

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

Answer 2

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.