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Keeping the potential difference constan...

Keeping the potential difference constant, the resistance of a circuit is halved. How does the current change?

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The current becomes double the initial current.
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KUMAR PRAKASHAN-ELECTRICITY-OBJECTIVE QUESTIONS AND ANSWERS (Answer the following questions as directed (Miscellaneous):)
  1. Which of the following statements is correct? (a) one volt is one j...

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  2. Keeping the resistance constant, the potential difference applied acro...

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  3. Keeping the potential difference constant, the resistance of a circuit...

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  4. A potential difference of 10 V is needed to make a current of 0.02 A f...

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  5. A current of 200 mA flows through a 4 kOhm resistor. What is the poten...

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  6. The electrical resistivities of four materials A, B, C and D are given...

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  7. The equivalent resistance of a series combination of two resistors is ...

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  8. An electric lamp is labelled 12 V, 36 W. This indicate that it should ...

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  9. Name two devices whose working is based on the heating effect of elect...

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  10. Name the gases which are filled into the filament-type electric light ...

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  11. Why are the filament-type electric light bulbs not power efficient?

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  12. Under what conditions is the Ohm.s law applicable?

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  13. Why is Nichrome used as a heating element?

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  14. Why are Constantan and Manganin used for making standard resistors?

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  15. Why is lead-tin alloy used for making a fuse?

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  16. What is the difference between a resistor ~ and resistance?

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  17. What do you mean by the term load in an electric circuit?

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  18. How does the current divide itself in a parallel combination of resist...

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  19. How does the potential difference divide itself in a series combinatio...

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  20. How is heat produced in a conductor by an electric current?

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