155
Question
state the relation between the commercial and SI unit of electrical energy.
state the relation between the commercial and SI unit of electrical energy.
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Solution
The SI unit of energy is Joules and the commercial unit of electric energy is kWh.
1 kWh = 1000 W × 1 hour
= 1000 W × 3600 s
= 36 × 105 Ws
= 3.6 × 106 J
The SI unit of energy is Joules and the commercial unit of electric energy is kWh.
1 kWh = 1000 W × 1 hour
= 1000 W × 3600 s
= 36 × 105 Ws
= 3.6 × 106 J
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