An electric heater is used every day for $120 m i n u t e s$ . The electricity bill for $30 d a y s$ is $60 u n i t s$ . Calculate the power of electric heater.

Open in App

Solution

Step 1: Given data
Given data:
Time for which heater is used in a day is
$t = 120 m i n u t e s = 2 \times 60 m i n u t e s (1 h = 60 m i n u t e s) = 2 h$
The electricity bill for $30 d a y s$ is $60 u n i t s$ .
Therefore, the electricity bill for $1 d a y$ will be $2 u n i t s$ .
Also, $1 u n i t$ is equivalent to $1 k W h$ .
It means $2 u n i t s$ are consumed in one day that is $2 k W h$ energy is consumed per day.
Step 2: Finding the power of the electric heater
Power $(P)$ of the heater is
$P = \frac{E}{t}$
where $E$ is the energy consumed by the heater in one day.
Substitute the values of energy and time into the equation to calculate power.
$P = \frac{2 k W h}{2 h} P = 1 k W$
Thus, the power of the heater is $1 k W$ .

Suggest Corrections

Similar questions

An electric heater uses 600 kJ of electrical energy in 5 minutes. Calculate its power rating.

In a house, an electric bulb of $60 W$ is used for $15 h o u r s$ and an electric heater of $750 W$ is used for $10 h o u r s$ every day. Calculate the cost of using the bulb and the heater for 30 days if the cost of 1 unit of electrical energy is $₹ 4 .$

An electric heater of 1000 watt is used everyday for 70 mins. Calculate the units of electric energy this heater will consume in 30 days of use.

Q. A

1000 W

heater is used for

1 hr

every day for

30

days. Find the cost of electricity if the rate is

Rs. 3 / unit

An electric heater of $750 W$ is used $2 h / d a y$ . Calculate the units of energy consumed in $30 d a y s$ by it.

Join BYJU'S Learning Program

An electric heater is used every day for 120minutes. The electricity bill for 30days is 60units. Calculate the power of electric heater.

An electric heater is used every day for $120 m i n u t e s$ . The electricity bill for $30 d a y s$ is $60 u n i t s$ . Calculate the power of electric heater.