Physics, asked by pricilaEkka4979, 1 year ago

Calculate the electrical energy in unit consumed by 500 watts lamp for 5 hours mcq

Answers

Answered by kanishkadps22
7

Answer:

2.5 units

Explanation:

p=w*t

500*5W= 2500W

1kWh=1 unit

1000W=1kWh

2500W=2.5kw

2.5 units of electricity is consumed.

Answered by Anonymous
8

2.5 units of electrical energy has been consumed.

Given : 500 watts lamp for 5 hours

To find : The electrical energy consumption.

Solution :

We can simply solve this mathematical problem by using the following mathematical process. (our goal is to calculate the electrical energy consumption)

Here, we will be using the following mathematical formula.

Energy = Power × Time

By, putting the available data we get :

Energy = 500 × 5 = 2500 Wh

Now,

1000 Wh = 1 kWh

1 Wh = (1/1000) kWh

2500 Wh = (2500/1000) kWh

2500 Wh = 2.5 kWh

Now, we know that :

1 kWh = 1 unit

So,

2.5 kWh = (1×2.5) units

2.5 kWh = 2.5 units

So, electrical energy consumption = 2.5 units

Hence, 2.5 units of electrical energy has been consumed.

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