GivenResistance, R =8ΩCurrent, I=15 ATime period,T = 2 hoursPower, P is the rate at which the heat is developed by the heaterFormula used:Power, P= I2 RWhere I is the currentR is the resistancePutting the values in the above equation, we getH = 15 Χ 15 Χ 8 = 1800 WThus, the rate at which heat is developed in the heater is 1800 joules per second.

Q. 174.0( 119 Votes )

An electric heate

Class 10th NCERT - Science 12. Electricity

Answer :

Given
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
Where
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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