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Question

The quantity of heat generated in a conductor depends on _____.
  1. square of the current (I2)
  2. resistance of the conductor (R)
  3. I2Rt.
  4. time for which the mean flows (t)

A
resistance of the conductor (R)
B
time for which the mean flows (t)
C
square of the current (I2)
D
I2Rt.
Solution
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The correct option is D I2Rt.
The quantity of heat generated in a conductor depends on square of the current (I2). Now, according to Joule's law,
H=I2Rt
where H= heat
I= current
R= resistance
t= time taken

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