What is the reading of voltmeter in the following figure ?

Options

A. `3 V`
B. `2 V`
C. `5 V`
D. `4 V`

Answer

D

Explanation

(d) Resistance between `A` and `B = (1000 xx 500)/((1500)) = (1000)/(3)`
So,equivalent resistance of the cricuit
`R_(eq) = 500 + (1000)/(3) = (2500)/(3)`
`:.` Current drawn from the cell
`i= (10)/((2500//3)) = (3)/(250) A`
Reading of voltmeter or potential difference across
`AB = (3)/(250) xx (1000)/(3) = 4V`