Science, asked by antu5308, 2 days ago

A hairdryer has a power rating of 1.5kW. How much will it cost to use this hairdryer for 10 minutes if electricity costs 11p per unit?

Answers

Answered by Afreenakbar

Answer:

The cost is 2.75 p.

Explanation:

To calculate the cost of using a hairdryer for 10 minutes,

we need to first determine the amount of electricity used in kilowatt-hours (kWh).

A 1.5kW hairdryer used for 10 minutes is equivalent to

= $1.5 (\frac{10}{60})$

= 0.25 kWh

The cost of this amount of electricity can then be calculated by multiplying the number of kWh by the cost per unit.

In this case,

= 0.25 kWh x 11 p/kWh

= 2.75p.

So, it will cost 2.75p to use a 1.5kW hairdryer for 10 minutes if electricity costs 11p per unit.

It is important to keep in mind that this is a rough estimate and the actual cost may vary slightly based on a number of factors such as energy efficiency, usage patterns, and local energy tariffs.

Additionally, the cost of electricity is subject to change over time, so it's always a good idea to check with your local energy .