Question

A Cilling fan of 80 watts is used for 12 housse
per day.calculate the units of energy consumed in One day by the fan.​

Answer 1

Given :-

Power = P = 80 W

Time = t = 12 hours

First of all convert "watt" to "Kilo watt".

P = 80/1000 = 0.08 KW

Now, As we know that,

E = Pt

E = 0.08 × 12

E = 0.96 KWh

Answer 2

Given :-

Power = 80 W

Time = 12 hours

To Find :-

Energy consumed

Solution :-

At first lets convert unit

1 kW = 1000 W

80 W = 80/1000 = 0.8 kW

Now

We know that

$\sf E = pt$

E = Energy

P = power

T = Time

Putting values

E = 0.8 $\times$ 12

E = 0.96 kWh