Question

calculate electrical energy consumed by an electric heater if it is working for 2hr and its power is 1000watts​

Answer 1

Answer:

• The electrical energy consumed by an electric heater is 2 kWh.

Step-by-step explanation:

Given :

• Work done for 2 hours. [Time taken]
• Power (P) is 1000 watts means 1 kW.

To Find :

• Electrical energy (E) consumed.

Calculations :

Let's consider the electrical energy consumed as 'E'

Formula used :

• $\boxed{ \rm{ \gray{Power(P) = \dfrac{Energy(E)}{Time \: taken(T)}}}}$

$\dag$ Putting the values,

Here,

• Power is 1 kW
• Time taken is 2 hours

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$\mapsto \sf Power(P) = \dfrac{Energy(E)}{Time \: taken(T)}$

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$\mapsto \sf \: 1kW = \dfrac{Energy(E)}{2 \: hours}$

According to the Question,

Let's calculate the electrical energy consumed,

Formula used,

• Energy(E) = Power × Time taken

So, by applying this formula we'll calculate the final result. [answer]

Putting the values,

$\mapsto{\rm{\red{Energy(E) = {Power(P) \times Time \: taken(T)}}}}$

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$\mapsto \sf Energy(E) = {1 \: kW \times 2 \: hours}$

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• On multiplying 1 kW with 2 hours,

⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

$\mapsto \boxed {\bf 2 \: kWh} \ \pink{ \bigstar}$

Therefore,

• The electrical energy (E) consumed by an electric heater is 2 kWh.