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A voltmeter has resistance of 2000 ohms ...

A voltmeter has resistance of 2000 ohms and it can measure upto `2 V`. If we want ot increase its range to `10 V` then the, required resistance in series will be

A

`2000 Omega`

B

`4000 Omega`

C

`6000 Omega`

D

`8000 Omega`

Text Solution

Verified by Experts

The correct Answer is:
D
`2 = l xx 2000`
`10 = l(2000 + R)`
`rArr 10 =1/100 (2000 + R) rArr R = 8000 Omega`
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