Question

calculate the energy consumed by 1200 w for 200 minutes​

Answer 1

1200watt÷200minutes=6watt/1minute

so,

6 watt per minute is the energy consumed

Answer 2

(i) P = 1200 W t =30 min = 0.5 h

Electrical energy (E) =P x t = 1200 x 0.5

= 600W/h = 0.6 kWh.

(ii) Energy consumed is 30 days

= 0.6 x 30 = 18 kWh

Cost of using 18 units = 7 4 x 18 = 72

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