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A voltmeter of resistance 2000 Omega rea...

A voltmeter of resistance `2000 Omega` reads 1 volt/division. The resistance required to be connected in series with voltmeter to make it to read 10 volt/divistion is

A

`18 Omega`

B

`180 Omega`

C

`1800 Omega`

D

`18000 Omega`

Text Solution

Verified by Experts

The correct Answer is:
D
Let x be the total number of divisions on voltmeter. Thus , `V_g=x and V =10 x`.
Now , `V_g=I_g G therefore I_g=V_g//G=x//2000`
Thus , `R=(V)/(I_g)-G=(10x)/((x//2000))-2000`
`=18000Omega`
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