Assertion : Potential measured by a voltmeter across a wire a always less than actual potential difference across it.
Reason : Finite resistance of voltmeter changes current flowing through the resistance across which potential difference is to be measured.

Options

A. If both assertion and reason are ture and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If assertion and reason both are false.

Answer

A

Explanation

(a) `i_(1) = (E)/(R )`
`R_(eq) = (R R_(V))/(R + R_(V))`
`i_(2) = (E)/((R R_(V) // R + R_(V)))`