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With resistances P and Q in the left an...

With resistances P and Q in the left and right gaps of a metre bridge, the balance point divides the wire in the rati 1/3. When P and Q are increased by `40Omega`, the balance point divides the wire in the ratio 3/5. The values of P and Q will be respectively

A

`30Omega, 10Omega`

B

`10Omega, 30Omega`

C

`20Omega,60Omega`

D

`60Omega,40Omega`

Text Solution

Verified by Experts

The correct Answer is:
C
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TARGET PUBLICATION-CURRENT ELECTRICITY -Critical Thinking
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  16. A potentiometer has uniform potential gradient. The specific resistanc...

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  18. Potentiometer wire of length 1 m is connected in series with 490 Omega...

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