Question

A radio transfers 270 J of energy electrically. 94.5 J is transmitted as sound. Work out the efficiency of this radio. Give your answer as a decimal.

Answer 1

The efficiency of this radio is 35%

Explanation:

Given that,

Output work, $W_o=94.5\ J$

Input work, $W_i=270\ J$

The efficiency of radio is equal to the output work divided by input work. It is given by :

$\eta=\dfrac{W_o}{W_i}\times 100$

$\eta=\dfrac{94.5}{270}\times 100$

$\eta=35\%$

So, the efficiency of this radio is 35%. Hence, this is the required solution.

Learn more :

Topic : Efficiency

https://brainly.in/question/13741555

Answer 2

35Answer:

Explanation:bc