Assetion : In the following circuit emf is `2 V` and internal resistance of the cell is `1 Omega` and `R = 1 Omega`, then reading of the voltmeter is `1 V`.
Reason : `V = E - ir` where `E = 2 v, i= (2)/(2) = 1 A` and `R = 1 Omega`

Options

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

Answer

A

Explanation

Here, `E = 2V, i=2/2=1 A` and `r = 1 Omega`
Therefore, `V = E-ir = 2-1 xx 1 = 1 V`