Power of an electric heater working in 230 V is 1000 W. Calculate the heat produced if the current passes for 5minutes through the circuit. *
Answers
Answered by
3
Answer:
Heat=P×t
=1000×5×60
=300000 J
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Answered by
1
Answer:
Power =P=VI⟹1000=250I⟹I=
250
1000
=4A
∴(i) Electric current flowing through heater=I=4A
∴(ii) Resistance of heated wire R=
I
V
=
4
250
=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=
1000
P
KW×2hour=2KW-hour
Explanation:
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