1.

two resistors of 2 ohm and 4 ohm are connected in parrallel to a constant direct current voltage in which case more heat is produced?

Answer»

Heat Produced is GIVEN by
Q = i^2Rt , It is directly proportional to the Resistance of the resistor, if the current is constant for a certain PERIOD of time.
As here the current too varies due to parallel connection
2 OHM resistor gets 2i/3 A and 4 ohm resistor gets i/3 A

For 2 ohm:
Q= 8i^2/3 J

For 4 ohm :
Q= 4i^2/3 J


So 2ohm resistor produces more heat


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