A solar panel is used to recharge a battery. The solar panel produces 0.80 W of electrical power. The panel is 20% efficient. What is the po

Question

A solar panel is used to recharge a battery. The solar panel produces 0.80 W of electrical power. The panel is 20% efficient. What is the power input of the sunlight onto the solar panel? * 1 point 0.16 W 4.0 W 8.0 W 16.0 W

in progress 0
6 months 2021-07-16T16:30:24+00:00 1 Answers 34 views 0

Answers ( )

    0
    2021-07-16T16:31:27+00:00

    Answer:

    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

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )