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The voltmeter reads 40 V across 60 Omega...

The voltmeter reads `40 V` across `60 Omega` resistance. The resistance of voltmeter is.
.

A

`10 Omega`

B

`20 Omega`

C

`30 Omega`

D

`40 Omega`

Text Solution

Verified by Experts

The correct Answer is:
C

`i= (40)/(20) = 2 A`
`i_1 = (40)/(60) = (2)/(3) A`
`i_2 = i- i_1 = 2 - (2)/(3) = (4)/(3) A`
`i_2 R_V = 40 rArr (4)/(3) R_V = 40`
`R_V = 30 Omega`.
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