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A p.d of 220 V is maintained across a 12...

A `p.d` of `220 V` is maintained across a `12000 Omega` rheostat as shown. The voltmeter `V` has a resistance of `6000 Omega` and point `C` is at one-fourth of the distance form `a` to `b`. The reading of voltmeter is.
.

A

10 V

B

20 V

C

30 V

D

40 V

Text Solution

Verified by Experts

The correct Answer is:
D

`V_1 = (2000)/(2000 + 9000) xx 220 = (2)/(11) xx 220 = 40 V`.
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CP SINGH-CURRENT ELECTRICITY-Exercise
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  9. The reading of the ammeter as per figure shown is

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  10. Two batteries, one of emf 18 volts and internal resistance 2 Omega and...

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  11. Three resistance P, Q, R each of 2 Omega and an unknown resistance S f...

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  15. In a meter bridge experiment, null point is obtained at 20 cm from one...

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  16. The accurate measurement of emf can be obtained using.

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  17. In a potentiometer of one metre length, an unknown emf voltage source ...

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  18. A 2 volt battery, a 15 Omega resistor and a potentiometer of 100 cm le...

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