Question

An electric heater is rated 1500 W.How much energy does

it use in 10 hours?​

Answer 1

Answer:

Answers. Power= 1500w=1500/1000=1.5kw Time=10 hours Energy=power×time 1.5×10 =15kWh.....

Explanation:

hope its help u .

Answer 2

Given :-

Power of the electric heater = 1500 W

Time taken = 10 hours

To Find :-

The energy used in 10 hours.

Analysis :-

Here we are given with the power and the time taken by the electric heater.

In order to find the energy substitute the values given in the question such that energy consumed by the electric heater is equal to power multiplied by the time taken by the electric heater.

Solution :-

We know that,

• p = Power
• t = Time
• e = Energy

Using the formula,

$\underline{\boxed{\sf Energy=Power \times Time \ taken}}$

Given that,

Power (p) = 1500 W = 1.5 kW

Time (t) = 10 hours

Substituting their values,

⇒ e = p × t

⇒ e = 1.5 × 10

⇒ e = 15 kWh

Therefore, the energy consumed in 10 hours is 15 kWh.

Additional knowledge :-

Energy:

Energy is defined as the capacity to perform a work.

Power:

Power is defined as the rate at which work is done.

Time:

Time is defined as a measurable period in which a action is performed.