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While using a post office box the keys s...

While using a post office box the keys should be swiched on in the following order ,

A

first cell key the and then galvanometer key.

B

first the galvanometer key and then cell key.

C

both the keys simultaneously.

D

any key first and then the other key.

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The correct Answer is:
A
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RESONANCE-CURRENT ELECTRICITY-High Level Problems (HIP)
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  2. A galvanometer having 30 divisions has a current sensitivity of 20muA/...

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  6. A battery is made by joining m rows of identical cells in parallel. Ea...

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  7. In the circuit shown in figure, all wires have equal resistance r. Fin...

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  8. A falvanometer having a coil resistance of 100 ohms gives a full scale...

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  9. A 6 volt battery of negligible internal resistance is connected across...

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  10. The emf E and the internal resistance r of the battery shown in figure...

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  11. Consider an infinite ladder of network shown In fig 5.223. A voltage i...

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  15. A thin uniform wire AB of length 1 m, an unknown resistance X and a re...

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  17. A rod of length L and cross-section area A lies along the x-axis betwe...

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  18. A galvanometer vaving 50 divisions provided with a variable shunt S is...

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  19. Standard rating of each bulb is P, V. If total power consumption by co...

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