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A galvanometer having a coil resistance ...

A galvanometer having a coil resistance of `100 omega` gives a full scale deflection , when a current of `1 mA` is passed through it. The value of the resistance, which can convert this galvanometer into ammeter giving a full scale deflection for a current of `10A` , is :

A

`0.1 Omega`

B

`3Omega`

C

`0.01 Omega`

D

`2Omega`

Text Solution

Verified by Experts

The correct Answer is:
C
`Ig G = (I - Ig)s`
`:. 10^(-3) xx100 = (10-10^(-3))xxS`
`:. S ~~ 0.01 Omega`
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DISHA PUBLICATION-MOVING CHARGES AND MAGNETISM -EXERCISE - 2 : Concept Applicator
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  12. A wire carrying current I has the shape as shown in adjoining figure. ...

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  18. An otherwise infiniye, straight wire has two concentric loops of radii...

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