A railway compartment is lit up by thirteen lamps each taking 2.1 amp at 15 volts. The heat generated per second in each lamp will be
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
From Joule's law, for a current carrying conductor at a definite temperature the rate of production of heat is given by 
where 
is current, 
the potential difference and 
the time.
Given, 
volt,
Also, 
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