Question

One watt-hour is equivalent to
A.6.3 x 103 J
B.6.3 x 10-7 J
C.3.6 x 103 J
D.3.6 x 10-3 J

Answer 1

______✨ HEY MATE ✨______

➡️Option (C) 3.6 x 103 J is the right answer ✔️

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Answer 2

$\huge{\bold{Answer :}}$

One watt-hour is equivalent to

Relation between kilowatt hour and Joule.


If energy is consumed at the rate of 1 kilojoule / second at the rate of 1 kilowatt and this continues for 1 hour, then the total energy consumed is called one kilowatt hour.


Thus,


1 kWh = 1 kW × 1 hour


         = ( 1000 W ) × ( 3600 secs )


         = ( 1000 J / s ) × ( 3600 secs )


         = ( 3600000 joules )


         = 3.6 × 10⁶  J.


Hence, 1 kWh = 3.6 × 10⁶