Question

A 10ohm speaker is connected across the output terminals of a power amplifier that delivers of 20 watt to it. What is the current supplied to the speaker

Answer 1

Answer:

The current supplied to the speaker is 1.414 A

Explanation:

Given,

R = 10 ohm

P = 20 W

Formula,

P = (I^2)(R)

I^2 = P / R

I^2 = 2

I = root 2 = 1.414 A