Question

A CB radio is rated at 7.5 watts, and actual measurements show that it delivers 6.3 watts to its antenna. What is its efficiency?

Answer 1

Answer:

The efficiency is 84%.

Step-by-step explanation:

The efficiency is the percentage that it delivers, so it can be solved by a rule of three.

6.3 watts - x

7.5 watts - 1

$7.5x = 6.3$

$x = \frac{6.3}{7.5}$

$x = 0.84$

So the efficiency is 84%.