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When two identical batteries of internal...

When two identical batteries of internal resistance `1Omega` each are connected in series across a resistor R, the rate of heat produced in R is `J_1`. When the same batteries are connected in parallel across R, the rate is ``J_2 = 2.25 J_2` then the value of R in `Omega` is

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RESONANCE-CURRENT ELECTRICITY-Exrcies-3(PART-1)
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  6. To verify Ohm's law, a student is provided with a test resistor R(T), ...

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  7. When two identical batteries of internal resistance 1Omega each are co...

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  8. Two batteries of different emfs and different internal resistances are...

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  9. For the resistance network shown in the figure, choose the correct opt...

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  10. Heater of an electric kettle is made of a wire of length L and diamete...

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  11. Two ideal batteries of emf V(1) and V(2) and three resistance R(1)R(2)...

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  12. A galvanometer gives full scale deflection with 0.006 A current. By co...

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  13. During an experiment with a metre bridge, the galvanometer shows a nul...

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  14. In an aluminium (Al) bar of square cross section, a square hole is dri...

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  15. In the following circuit, the current through the resistor R (=2Omega)...

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  16. An infinite line charge of uniform electric charge density lambda lies...

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  17. Consider two identical galvanometers and two identical resistors with ...

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  18. Consider an evacuated cylindrical chamber of hight h rigid conducting ...

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  19. Consider an evacuated cylindrical chamber of hight h rigid conducting ...

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  20. A moving coil galvanometer has 50 turns and each turn has an area 210 ...

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