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A voltmeter having a resistance of 998 o...

A voltmeter having a resistance of 998 ohms is connected to a cell of e.m.f. 2 volt and internal resistance 2 ohm. The error in the measurment of e.m.f. will be

A

`4 xx 10^-1` volt

B

`2 xx 10^-3` volt

C

`4 xx 10^-3` volt

D

`2 xx 10^-1` volt

Text Solution

Verified by Experts

The correct Answer is:
C

`i= (2)/(998 + 2) = 2 xx 10^-3 A`
`V_A - V_B = 2 - 2 xx 10^-3 xx 2 = (2 - 4 xx 10^-3) V`
Error `= 4 xx 10^-3 V`.
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