Question

When electricity passed through 1000w heater for 10minutes calculate amount of heat produced in it?

Answer 1

Answer:

Power =P=VI⟹1000=250I⟹I= 2501000 =4A∴(i) Electric current flowing through heater=I=4A∴(ii) Resistance of heated wire R= IV = 4250 =62.5Ω∴(iii) Thermal energy produced per minute by heater=E T =P×1min=1000×60sec=60000J∴(iv) Electrical energy spent in kilowatt-hour by heater in 2 hours= 1000P KW×2hour=2KW-hour

Explanation:

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