Q. 174.0( 119 Votes )

An electric heate

Answer :

Resistance, R =8Ω
Current, I=15 A
Time period,T = 2 hours
Power, P is the rate at which the heat is developed by the heater
Formula used:
Power, P= I2 R
I is the current
R is the resistance
Putting the values in the above equation, we get
H = 15 Χ  15 Χ  8 = 1800 W
Thus, the rate at which heat is developed in the heater is 1800 joules per second.

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