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In the following circuit the equivalent ...

In the following circuit the equivalent resistance between A and B is
10 Ω
20 Ω
30 Ω
40 Ω

A

`10Omega`

B

`20Omega`

C

`30Omega`

D

`40Omega`

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CHETANA PUBLICATION-Current Electricity-Exercise
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  10. State the principle of potentiometer.

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  11. Write down the equation for thermo emf when cold junction is at 0^@C a...

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  12. A cell of emf 1.1 V and internal resistance r is connected across as e...

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  13. State any two advantages of potentiometer over voltmeter.

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  14. Distinguish between ammeter and voltmeter, (any two points).

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  15. If V = nv Vg then show that X = G(nv -1).

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