An electric motor has an input power of 25 kW. Its efficiency is 0.80.
Which row shows the correct values for this motor?
Useful output power = 5 kW5\text{ kW}5 kW, Wasted output power = 20 kW20\text{ kW}20 kW
Useful output power = 15 kW15\text{ kW}15 kW, Wasted output power = 10 kW10\text{ kW}10 kW
Useful output power = 20 kW20\text{ kW}20 kW, Wasted output power = 5 kW5\text{ kW}5 kW
Useful output power = 20 kW20\text{ kW}20 kW, Wasted output power = 10 kW10\text{ kW}10 kW