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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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MOTION-CURRENT ELECTRICITY-EXERCISE -4 (Level -II)
  1. Figure shows three resistor configurations R1,R2 and R3 connected to 3...

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  2. Statement-1 : In a Meter Bridge experiment, null point for an unknown ...

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  3. For the circuit shown in the figure

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  4. Consider a thin square sheet of side L and thickness t, made of a mate...

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  5. Incandescent bulbs are designed by keeping in mind that the resistance...

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  6. To verify Ohm's law, a student is provided with a test resistor RT, a ...

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

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  8. A meter bridge is set up as shown, to determine an unknown resistance ...

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

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  10. For the resistance network shown in the figure , choose the correct op...

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  11. Two ideal batteries of emf V(1)andV(2) and these resistances R(1),R(2)...

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

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  13. A galvanometer gives full scale deflection with 0.006 A current . By c...

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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. An incandesent bulb has a thin filament of tungsten that is heated to ...

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

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  19. In the circuit shown below, the key is pressed at time t = 0 . Which o...

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  20. Two identical moving coil galvanometers have 10Omega resistance and fu...

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