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
NCERT Class X
Science - Science
Chapter _Electricity
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Given:
R=8
I=15A
t=2Hr=2*3600s
Heat developed in the heater=I^2R*t=15^2*8*t=225*8*2*3600=1.29...
Rate of heat develped=Power=I^R=15^2*8=1800 W
R=8
I=15A
t=2Hr=2*3600s
Heat developed in the heater=I^2R*t=15^2*8*t=225*8*2*3600=1.29...
Rate of heat develped=Power=I^R=15^2*8=1800 W
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