Answer: 0.3 Kwh
Explanation:
1) Data:
a) energy output = 1.4 kWh
b) efficiency = 85%
c) energy loss = ?
2) Formulas
a) efficieny = (energy output / energy input) × 100
b) energy loss = energy input - energy output
3) Solution
a) energy output
efficiency = (energy output / energy input) × 100 ⇒
energy input = energy output × 100 / efficiency = 1.4 Kwh × 100 / 85 ≈ 1.7 Kwh
b) energy loss = 1.7 Kwh - 1.4 Kwh = 0.3 Kwh.
