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The heat produced per unit time, on pass...

The heat produced per unit time, on passing electric current through a conductor at a given temperature is directly proportional to the .....

A

Electric current

B

Reciprocal of electric current

C

Square of electric current

D

Reciprocal of square of electric current

Text Solution

Verified by Experts

The correct Answer is:
C
square of electric current
W = Vlt
`(W)/(t) `= VI
P = VI
` therefore P = IR xx I = I^(2)` R
`therefore ` Produced heat : P = H = `I^(2) ` R Here R is constant `therefore H prop I^(2)`
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KUMAR PRAKASHAN-CURRENT ELECTRICITY-SECTION [D] MULTIPLE CHOICE QUESTIONS (MCQs) (MCQs ASKED IN BOARD EXAM AND GUJCET)
  1. Match the following two columns.

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  2. A voltmeter of a very high resistance is joined in the circuit as show...

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  3. A and B are two points on a uniform ring of radius r. The resistance o...

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  4. Two wires of equal length and equal diameter and having resisticities ...

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  5. What is the total current supplied by the battery to the circuit shown...

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  6. A student is given 4 identical batteries having emf 1.5 Veach and inte...

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  7. Given quantity of water is boiled by an electric heater in 5 min. If s...

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  8. In above circuit if current through 10 Omega resistor is 2.5 A, value ...

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  9. Brown, Red and Orange coloured bands on carbon resistor are followed b...

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  10. What is the current in the 40 resistor when switch S(1) is open and sw...

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  11. When the temperature of a conductor increase the ratio of its resistiv...

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  12. You are given 10 resistors each of resistance 2 Omega. First they are ...

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  13. The dimensional formula of mobility is ... .

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  14. The heat produced per unit time, on passing electric current through a...

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  15. A carbon resistor has three bands as Brown Black and Green in order. W...

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  16. In the network shown in the figure the equivalent resistance between p...

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  17. Shunt wire should be ...... .

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  18. According to Ohm's law (R = (V)/(I) ) , as current flowing through a c...

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  19. Kichhoff's junction role represents…….

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  20. Two resistors when connected in series net resistance is 5 Omega and w...

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