Question

How much time will it take a 75w ceiling fan to convert 1500j of electrical energy into mechanical and thermal energy?

Answer 1

20h

Explanation:

Given parameters:

Electrical power = 75W

Electrical energy = 1500J

Unknown:

Time taken = ?

Solution:

Electrical power is the amount of voltage that drives current.

    P = IV

Electrical energy is the voltage that drives a current per unit of time

        E = IVt

        E = Pt

Since time is the unknown, we can make it subject of the formula;

           t = $\frac{E }{P}$ = $\frac{1500}{75}$ = 20h

Learn more:

Invention of electrical power brainly.com/question/13146914

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