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In the circuit shown the cells A and B h...

In the circuit shown the cells `A` and `B` have negligible resistance. For `V_(A) = 12 V, R_(1) = 500 Omega` and `R = 100 Omega`, the galvanometer `(G)` shows no deflection. The value of `V_(B)` is

A

4 V

B

2 V

C

12 V

D

6 V

Text Solution

Verified by Experts

The correct Answer is:
B

`V_B = p.d.across 100 Omega = (100)/(100 + 500) = 12 = 2 V`.
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CP SINGH-CURRENT ELECTRICITY-Exercise
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  5. In the circuit P != R, the reading of the galvanometer is same with s...

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  6. The reading of the ammeter as per figure shown is

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

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

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  9. In a Wheatstone's bridge, three resistances P,Q and R connected in the...

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  10. Shown in the figure below is a meter- bridge set up will null deflecti...

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  11. In the circuit shown, a meter bridge is in its balanced state. The met...

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

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

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

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

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  16. A potentiometer wire of length L and resistance 10 Omega is connected ...

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  17. In an experiment to measure the internal resistance of a cell by a pot...

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  18. For comparing the e.m.f.'s of two cells with a potentiometer, a standa...

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  19. A potentiometer circuit is setup as shown. The potential gradient acro...

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  20. In a ammeter 0.2% of main current passes through the galvanometer. If ...

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