How much energy in kilowatt hour is consumed in operating ten $50\, watt$ bulbs for $10$ hours per day in a month ($30$ days).
Medium
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(d) Energy consumed in $kWh = \frac{{Watt \times hour}}{{1000}}$
$ \Rightarrow $ For $30$ days, $P = \frac{{10 \times 50 \times 10}}{{1000}} \times 30 = 150\,kWh$
$ \Rightarrow $ For $30$ days, $P = \frac{{10 \times 50 \times 10}}{{1000}} \times 30 = 150\,kWh$
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