The rating of an electric oven is 4400 W; 220 V.
Calculate its resistance when it operates at 220 V.
Also calculate the energy consumed in kWh in the
month of September if the oven is used daily for 5
hours at the rated voltage.
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Answer:R=11ohm
E=660 units
Explanation: given:-p=4400w=4.4kw
V=220v
T/d=5hrs
Rtf:-R=?
E/month of September (30 days)=kWh/30 days=?
Sol:-p=v^2/r
So,r=v^2/p
R=220*220/4400
R=11ohm
T/30 days=5*30=150
E=kWh=4.4(150)=660 units
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