If a dc voltmeter is made from an ammeter having a fullscale

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If a dc voltmeter is made from an ammeter having a fullscale deflection of 100 micro amperes, then its sensitivity (in k-ohm/V) will be:

1. 1
2. 10
3. 100
4. 1000

Correct Option: B

We know that sensitivity and full scale deflection (fsd) current is given by relation. Sensitivity,
S = 1/I_fsd
or
S = 1/100 μA
or
S = 10000 ohm/V
or
S = 10 k-ohm/V