Question

The voltage V of an audio speaker can be represented by V= 4 sqrt P , where P is the power of the speaker. An engineer wants to design a speaker with 900 watts of power. What will the voltage be?

Answer 1

Given that;

The voltage V of an audio speaker can be represented by

`\begin{gathered} V=4√(P) \\ Where\text{ P is the power of the speaker} \end{gathered}`

Where, P = 900, the voltage, V, will be

`\begin{gathered} V=4√(P) \\ V=4√(900) \\ V=4(30)=120V \end{gathered}`

Hence, the voltage is 120V