Question

EXAMPLE 1.6
How much energy
dees
a 100-W electric
bulb
consume in two hours ? 2
Solution​

Answer 1

To compute amount of kilo-Watt-hours, energy convert the Watts to kilowatts !

Refer to the attachment ⬆️

Answer 2

Answer:

It can be easily calculated.

For ,

1J = 1W x 1sec,

So, to calculate amount of energy consumed (i.e Joules) by 100W in 2hrs,

Energy Consumed=100W x 2 x 60 x 60 joules = 720000 Joules.

For wattHrs, Energy Consumed = 100w x 2hrs = 200Wh.

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