Question

energy output ÷energy input = energy efficiency
energy efficiency × 100 = energy efficiency%
energy output = 5 units
energy input = 100 units
what is the energy efficiency percentage?
95%
5%
15%

Explanation:

Step1: Calculate Energy Efficiency

Using the formula \( \text{Energy Efficiency} = \frac{\text{Energy Output}}{\text{Energy Input}} \), substitute the given values: \( \text{Energy Output} = 5 \) units and \( \text{Energy Input} = 100 \) units. So, \( \text{Energy Efficiency} = \frac{5}{100} = 0.05 \).

Step2: Calculate Energy Efficiency Percentage

Using the formula \( \text{Energy Efficiency}\% = \text{Energy Efficiency} \times 100 \), substitute the value of Energy Efficiency from Step 1: \( 0.05 \times 100 = 5\% \).

Answer:

5% (The correct option is the one with "5%")