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Question

Number of joules in 1 kWh is


A

3.6 × 107

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B

3.6 × 106

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C

3.6 × 105

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D

3.6 × 104

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Solution

The correct option is B

3.6 × 106


Given:
1 kWh = 1000 watt × 1h or (60 × 60) = 3600 seconds
= 3600000 watt second

= 3.6 × 106 watt second

= 3.6 × 106 joule (J)
The number of joules in 1 kWh is 3.6 × 106


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