How much electrical energy is consumed when a bulb of 40 W is used for 12.5 hours every day for 30 days?

1000 J

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3000 J

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5.4 X 10⁷ J

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5.4 X 10⁶ J

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Solution

The correct option is C
5.4 X 10⁷ J

40 W = 40 J s^-1

Electrical energy consumed

= P x t

= (40) x (60 x 60 x 12.5 x 30) J

= 5,40,00,000 J

= 5.4 X 10⁷ J

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How much electrical energy is consumed when a bulb of 40 W is used for 12.5 hours every day for 30 days?

The correct option is C 5.4 X 107 J 40 W = 40 J s-1 Electrical energy consumed = P x t = (40) x (60 x 60 x 12.5 x 30) J = 5,40,00,000 J = 5.4 X 107 J

The correct option is C
5.4 X 10⁷ J

40 W = 40 J s^-1

Electrical energy consumed

= P x t

= (40) x (60 x 60 x 12.5 x 30) J

= 5,40,00,000 J

= 5.4 X 10⁷ J