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An electric bulb is connected to battery...

An electric bulb is connected to battery of e.m.f. 10V and 0.01 A current is flowing through the bulb. But when it is connected to 220V mains then the cureent is 0.05 A. Explain this apparent discrepancy with ohm's law.

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UNITED BOOK HOUSE-MODEL PAPER SET-01-EXERCISE
  1. Mention practical importance of zenor diode in a laboratory.

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  2. Why do we prefer a potentiometer with longer wire?

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  3. An electric bulb is connected to battery of e.m.f. 10V and 0.01 A curr...

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  4. The mass of an electron of charge 'e' is 'm'. The electron is moving i...

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  5. Which of the following relation represent Biot-Savart's law?

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  6. Which of the following, if any, can act as a source of electromagneti...

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  7. Which of the following, if any, can act as a source of electromagneti...

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  8. Which of the following, if any, can act as a source of electromagneti...

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  9. Hydrogen atom has one elctron. How then many lines are originated in h...

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  10. Explain how radioactive nuclei can emit beta-particle even though atom...

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  11. What do you mean by modulation index? What is its maximum and minimum ...

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  12. State Gauss's law in electrostatics. Proof of gauss law.

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  16. Describe Davission and Germer experiment to establish the wave nature...

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  19. Draw Wheatstone bridge circuit and write down the balancing condition ...

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  20. An A.C. generator has smaller resistance than that of the resistive lo...

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