Current Electricity and Electrical InstrumentHard
Question
In the circuit shown in figure the heat produced in the 5W resistor due to the current flowing through it is 10cal/s. The heat generated in the 4W resistor is:
Options
A.1 cal/s
B.2 cal/s
C.3 cal/s
D.4 cal/s
Solution
P = I2R ⇒ 10 = i25 ⇒ i2 = 
= 2 ⇒ i = √2
i4 =
⇒P4 = 
4, P5 = (i2)5
= 2 cal/s
= 2 ⇒ i = √2i4 =
⇒P4 = 4, P5 = (i2)5 = 2 cal/sCreate a free account to view solution
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