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Name two devices whose working is based ...

Name two devices whose working is based on the heating effect of electric current.

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KUMAR PRAKASHAN-ELECTRICITY-OBJECTIVE QUESTIONS AND ANSWERS (Answer the following questions as directed (Miscellaneous):)
  1. The equivalent resistance of a series combination of two resistors is ...

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

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

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

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

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

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  7. Why is Nichrome used as a heating element?

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

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

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

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

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

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

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

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  15. If a number of bulbs of different wattages are joined in parallel With...

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  16. Which bulb will glow With maximum brightness in case bulbs of differen...

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  17. What can you say about the resistance of an ammeter?

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  18. What can you say about the resistance of a voltmeter?

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  19. How does the resistance of a metallic Wire depend on its temperature?

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  20. Two wires have the same length, same radius but one of them is made of...

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