Understanding Energy Efficiency Calculator

Energy efficiency is a crucial concept in physics and engineering, representing how effectively energy is converted from one form to another without unnecessary loss. It is expressed as a percentage, calculated by comparing the useful energy output to the total energy input.

Formula:

Efficiency (%) = (Energy Output ÷ Energy Input) × 100

Example Calculations

Scenario: You are analyzing the efficiency of a motor. The motor consumes 2000 Joules of electrical energy but delivers only 1500 Joules as mechanical energy.

Steps:

1. Identify energy input (E_in): 2000 Joules
2. Identify energy output (E_out): 1500 Joules
3. Apply the formula: Efficiency = (E_out ÷ E_in) × 100
4. Efficiency = (1500 ÷ 2000) × 100 = 75%

Result: The motor has an efficiency of 75%.