An electric heater of resistance 8 ? draws 15 A from the service Chapter 12: Electricity Science Class 10 solutions are developed for assisting understudies with working on their score and increase knowledge of the subjects. Q 17: An electric heater of resistance 8 Ω draws 15 A from the service mains 2 hours. Calculate the rate at which heat is developed in the heater. is solved by our expert teachers. You can get ncert solutions and notes for class 10 chapter 12 absolutely free. NCERT Solutions for class 10 Science Chapter 12: Electricity is very essencial for getting good marks in CBSE Board examinations
Q 17: An electric heater of resistance 8 Ω draws 15 A from the service mains 2 hours. Calculate the rate at which heat is developed in the heater.
Solution:
Here Given that Resistance of the electric heater (R) = 8 Ω
Current drawn (I)= 15 A
We know that P = I2R
= 15×15×8 $e = m{c^2}$
= 1800w or J/s
∴ Heat is produced by the heater at the rate of 1800 J/s.
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