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A voltmeter has a range 0-V with a serie...

A voltmeter has a range 0-V with a series resistance R. With a series resistance 2 R, the range is 0-V'. The correct relation between V and V' is

A

`V' lt2V`

B

`V' gt gt 2 V`

C

`V' = 2 V`

D

`V' = 2 V`.

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