Question

53.
Write a formula for calculating the amount of heat) produced in acestor
of resistance R when current is passed throught for timet​

Answer 1

Answer:

Calculate the amount of heat produced in an electric heater of resistance 1000 ohms if 6 a current is passed throught it for 10 minutes.

solution : resistance of electric heater , R = 1000 ohms.

current through electric heater , I = 6A

time taken to pass current through it,t = 10 minute = 600 sec

we know,

amount of heat produced in electric heater = i²Rt

= (6A)² × 1000ohms × 600s

= 36 × 600000 J

= 21600000 J

= 2.16 × 10^7 J

hence, answer should be 2.16 × 10^7

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