what amount of energy in K.W.H is consumed in 10 hours by a machine power 500 w?
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Answer
Energy consumed by an electric device can be obtained with the help of the expression for power,
Energy consumed by an electric device can be obtained with the help of the expression for power,P = W/T
Energy consumed by an electric device can be obtained with the help of the expression for power,P = W/TWhere,
Energy consumed by an electric device can be obtained with the help of the expression for power,P = W/TWhere,Power rating of the device, P= 500 W = 0.50 kW
Energy consumed by an electric device can be obtained with the help of the expression for power,P = W/TWhere,Power rating of the device, P= 500 W = 0.50 kWTime for which the device runs, T= 10 h
Energy consumed by an electric device can be obtained with the help of the expression for power,P = W/TWhere,Power rating of the device, P= 500 W = 0.50 kWTime for which the device runs, T= 10 hWork done = Energy consumed by the device
Energy consumed by an electric device can be obtained with the help of the expression for power,P = W/TWhere,Power rating of the device, P= 500 W = 0.50 kWTime for which the device runs, T= 10 hWork done = Energy consumed by the deviceTherefore, energy consumed = Power —Time
Energy consumed by an electric device can be obtained with the help of the expression for power,P = W/TWhere,Power rating of the device, P= 500 W = 0.50 kWTime for which the device runs, T= 10 hWork done = Energy consumed by the deviceTherefore, energy consumed = Power —Time= 0.50 — 10 = 5 kWh
Hence, the energy consumed by four equal rating devices in 10 h will be 4 — 5 kWh = 20 kWh = 20 Units.
Explanation: