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A galvanometer of resistance 40Omega and...

A galvanometer of resistance `40Omega` and current passing through it is `100muA` per divison. The full scale has 50 divisions. If it is converted into an ammeter of range 2A by using a shunt, then the resistance of ammeter is

A

`40/399Omega`

B

`4/399Omega`

C

`0.1Omega`

D

`0.4Omega`

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-MOVING CHARGES AND MAGNETISM-EXERCISE-II
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  2. A tangent galvanometer shows no deflection when a current is passed th...

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  3. The senstivity of a galvanometer that measures current is decreased by...

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  4. In a galvanometer 5% of the total current in the circuit passes throug...

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  5. A galvanometer of resistance 150 ohm is shunted such that only 1/11 of...

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  6. A galvanometer has coil of resistance 50Omega and shows full deflectio...

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  7. A galvanometer has a current range of 15mA and voltage range of 750mv....

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  8. To convert a 800 mV range milli-voltmeter of resistance 40.Q into a mi...

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  9. In a galvanometer, a current of 1muA produces a deflection of 20 divis...

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  10. A galvanometer of resistance 40Omega and current passing through it is...

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  11. An electrical meter of internal resistance 20Omega gives a full scale ...

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  12. The sensitivity of a galvanometer is 60 divisions/Amp. When a shunt is...

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  13. When 500μA curre nt is passed through a galvanometer of 20Omega , it g...

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  14. A galvanometer of 25 ohm resistance can read a maximum current of 6mA....

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  15. The scale of a galvanometer of resistance 100Omega contains 25 divisio...

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  16. When 0.005A current flows through a moving coil galvanometer, it gives...

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  17. A voltmeter has a resistance of G ohm and range V volt. The value of r...

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  18. A circuit contains an ammeter, a battery of 30V and a resistanace 40.8...

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  19. A 250-turn rectangular coil of length 2.1 cm and width 1.25 cm carries...

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  20. To know the resistance G of a galvanometer by half deflection method,a...

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