Published by:
CGP EDU Academic Team
Published on: September 12, 2026
A resistance and an inductor coil are connected in series with an AC voltage source of variable frequency. If, starting from a value 
, the frequency of the source is increased, then the rate of heat dissipation in the resistance:
A
increases continuously
B
decreases continuously
C
increases first, then decreases
D
may increase or decrease, depending on 
Text Solution
Verified by ExpertsThe correct answer is:
B
Let the amplitude of the voltage source be 
Rate of heat dissipation is given by
So, if the frequency is increases, 
decreases continuously.
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