Question

an oven rated 1000w and a bulb rated 100w are run on 220v line for 2hours and 10 hours respectively which of the two uses more electrical energy
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Answer 1

Answer:

Toppr

Question

An electrical appliance is rated at 1000 KVA, 220V. If the appliance is operated for 2 hours, calculate the energy consumed by the appliance in: (i) kWh.(ii) joule.

Answer · 19 votes

(i) Let Energy consumed = Power × Time = 1000 × 2 = 2000 kWh (ii) 1 kWh = 3.6 × 10^6 J Energy consumed = 2000 × 3.6 × 10^6 J = 7.2 × 10^9J .

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Brainly.in

Question

An electric heater rated 1000w/220v operates 2 hours daily. calculate the cost of energy to operate for 30 days at 5 rupees per kilowatt hour.

Explanation: