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Heat produced in a conductor of resistan...

Heat produced in a conductor of resistance `4.2Omega` with 10A current is _____ cal/sec 

A

100

B

42

C

420

D

4.2

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-CURRENT ELECTRICITY-EXERCISE - II
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  3. Heat produced in a conductor of resistance 4.2Omega with 10A current i...

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  6. Which of the four resistances P,Q,R and S generate the greatest amount...

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  7. What is the ratio of heat generated in R and 2R

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  8. A 5^(0)C rise in the temperature is observed in a conductor by passing...

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  9. For ensuring dissipation of same energy in all three resistors (R(1), ...

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  10. The intemal resistance of a 2.1 V cell which gives a current of 0.2 A ...

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  11. The emf of a daniel cell is 1.08V. When the terminals of the cell are ...

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  12. A primary cell has an e.m.f, of 1.5 V, when short circuited it gives a...

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  13. If the external resistance is equal to the internal resistance of a ce...

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  14. Four cells each of emf 2V and internal resistance 1 ohm are connected ...

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  15. A student is asked to connected four cells of e.m.f of 1 V and interna...

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  16. 12 cells of each e.m.f 2V are connected in series among them, if 3 cel...

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  17. Two cells of emf 1.25V, 0.75V and each of internal resistance 1 ohms a...

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  18. If the identical cells each having an emf of 20 V are connected in Par...

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  19. When a battery connected across a resistor of 16Omega , the voltage ac...

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  20. The cells of emf's E(1) and E(2) be connector in parallel in a circuit...

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