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$1 KWh$ commercial units of electrical energy are equal to[253][254][255]

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3.6 ✕ 1 0^{6} Joules

3.6 ✕ 1 0^{- 6} Joules

3.6 ✕ 1 0^{3} Joules

3.6 ✕ 1 0^{- 3} Joules

answer is A.

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Detailed Solution

1 KWh

commercial units of electrical energy are equal to[256][257][258]

3.6 ✕ 1 0^{6} Joules

.
The commercial[259][260] unit of electrical energy is

Kilo - watt hour

KWh .

[261][262][263]

1 KWh

[264][265][266] is defined as the amount of energy utilised for an hour by a

1 KW

[267][268][269] appliance.
We know the relation,

\Rightarrow 1 Ws = 1 J

As we know that

1 hour = 60 minutes

And

1 minutes = 60 seconds

So,

1 hour = 60 \times 60 seconds

= > 3600 seconds

\Rightarrow 1 Wh = 1 \times 3600 J

⇒

1 KWh = 1000 W ✕ 1 h

⇒

1 KWh = 1000 W ✕ 60 ✕ 60

⇒

1 KWh = 1000 W ✕ 3600

⇒

1 KWh = 3.6 ✕ 1 0^{6} J

.[270][271]

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