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A galvanometer of resistance 25Omega is ...

A galvanometer of resistance `25Omega` is connected to a battery of 2 volt along with a resistance in series. When the value of this resistance is `3000Omega`, a full scale deflection of 30 units is obtained in the galvanometer. In order to reduce this deflection to 20 units, the resistance in series will be

A

4513ohm

B

5413ohm

C

2000ohm

D

6000ohm

Text Solution

Verified by Experts

The correct Answer is:
A
`R = (V)/(i_g) - G`
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Knowledge Check

  • A galvnometer of resistance 50 Omega is connected to a battery of 3 V along with a resistance of 2950 Omega in series . A full scale deflection of 30 divisions is obtained in the galvanometer . In order to reduce this deflection to 20 division , the resistance in series should be .

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    B
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    C
    `5550 Omega`
    D
    `6050 Omega`

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