Question

A solar panel is used to recharge a battery.The solar panel produces 0.80 W of electrical

Answer 1

Answer:

Explanation:

Input power, Ip = 4 Watts

Explanation:

Given the following data;

Power output = 0.8 Watts

Efficiency = 20%

To find the power input of the sunlight onto the solar panel;

Mathematically, the efficiency of a machine is given by the formula;

Efficiency = \frac {Out-put \; power}{In-put \; power} * 100

Substituting into the formula, we have;

20 = \frac {0.8}{Ip} * 100

20 = \frac {80}{Ip}

Cross-multiplying, we have;

20Ip = 80

Ip = \frac {80}{20}

Input power, Ip = 4 Watts

Answer 2

Answer:

today solar panel produce of energy is between 250 to 400 watt