Question

find the energy in KW h consumed in 10 hours by four devices of power 500 volt each​

Answer 1

Answer:

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Explanation:

Hence, the energy consumed by four equal rating devices in 10 h will be 4 — 5 kWh = 20 kWh = 20 Units.

Answer 2

Answer:

$\large\bf\underline \blue{To \: find:-}$

Find the energy in KW h consumed in 10 hours by four devices of power 500 volt each.

$\huge\bf\underline \green{Solution:-}$

Energy consumed by an electric device can be obtained with the help of the expression for power,

=P = W/T

Where,

Power rating of the device, P= 500 W = 0.50 kW

Time for which the device runs, T= 10 h

Work done = Energy consumed by the device

Therefore, 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.