Question

energy output ÷ energy input = energy efficiency energy efficiency × 100 = energy efficiency% energy output = 42 units energy input = 100 units what is the energy efficiency percentage? 8% 95% 42%

Explanation:

Step1: Calculate energy efficiency

$\frac{\text{Energy Output}}{\text{Energy Input}} = \frac{42}{100} = 0.42$

Step2: Convert to percentage

$0.42 \times 100 = 42\%$

Answer:

C. 42%