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When a power of $1 kW$ is used for one hour, the electrical energy consumed is $1 kWh$ . The amount of energy used in joule is__

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3 \times 10^{6} J

2.6 \times 10^{6} J

3.6 \times 10^{6} J

1.6 \times 10^{6} J

answer is C.

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Detailed Solution

When a power of

1 kW

is used for one hour, the electrical energy consumed is

1 kWh

. The amount of energy used in joule is

3.6 \times 10^{6} J .

It is given that; a power of

1 kW

is used for one hour
Then

1 kWh

1 kW \times 1 h

\Rightarrow 1 kWh = 1000 w \times 60 \times 60 s

\Rightarrow 1 kWh = 3.6 \times 10^{6} Ws

That is

3.6 \times 10^{6} J

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