Chapter 8.3, Problem 19R

To determine

The amount of the power required in the house.

Answer to Problem 19R

The amount of power required in the house is $3.75\text{kW}$ .

Explanation of Solution

Given Info:

Electricity generation of the solar cell, $E_1=1.5\text{kW}$

Percentage of the energy supply by the solar cell, $x=40\%$

Formula Used:

The expression to calculate the amount of power by the house is,

$E=\frac{E_1}{x}$

Calculation:

Substitute all the values in the above expression.

$\begin{array}{c}E=\frac{1.5\text{kW}}{40\%}\\ =\frac{1.5\text{kW}}{\left(40\times \frac{1}{100}\right)}\\ =3.75\text{kW}\end{array}$

Thus, the amount of power required in the house is $3.75\text{kW}$ .