Question

The power rating of an electrical appliance is 750w calculate the energy consumed using the appliance for 1 hour

Answer 1

Answer: 750 watt-hours

Explanation:

power= 750 w : time = 1hour

Energy = power x time

=750x1hour

=750 watt-hours

Answer 2

Given,

The power rating of an electrical appliance = 750 W

To find,

The energy consumed by the appliance for 1 hour.

Solution,

We can simply solve this numerical problem by using the following process:

Mathematically,

Power (P)= Energy consumed (E) ÷ Time (T)

=> Energy consumed (E) = Power (P) x Time (T)

{Statement-1}

Now, according to the question;

The energy consumed by the appliance for 1 hour

= Power rating of the appliance (P) x time of usage(T)

= 750 W × 1 hour

= 0.75 kW × 1 hour

= 0.75 kWh

= 0.75 electrical units

Hence, the energy consumed by the appliance in 1 hour is equal to 0.75 kWh, that is 0.75 electrical units.