Question

In 1–2 sentences, explain how to calculate the efficiency of a toaster....

Answer 1

To calculate the efficiency of a toaster, divide the useful energy output (the heat energy transferred to the bread) by the total energy input (the electrical energy consumed by the toaster) and then multiply by 100 to express it as a percentage. The formula is: Efficiency (%) = (Useful Energy Output / Total Energy Input) × 100.