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The resistance of a wire is R ohm. What ...

The resistance of a wire is R ohm. What will be its new resistance if it is stretched to n times its original length ?

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SL ARORA-CURRENT ELECTRICITY-Problems From Competitive
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  9. A battery of emf E is connected with there resistance R , 2R and 3R in...

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  10. Two resistance of 400 Omega and 800 Omega are connected in series with...

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  12. In the circuit shown in Fig. 4.41, calculate the current in each resis...

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  13. Calculate the steady-state current through 2 Omega resistor in the cir...

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  14. Five 4 Omega resistances, a 2 V battery and an ammeter are connected s...

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  15. Two cells of same emf epsilon, but different internal resistances r(1)...

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  16. Find the emf epsilon and the internal resistance r of an electric sour...

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  17. (i) What value of R(1) in the given network will make the equivalent r...

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  18. Calculate the current shown by the ammeter A in the circuit shown in F...

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