Physics · May / June 2017 · Paper 11 · Question 15

A small hydroelectric power station diverts water from a river. Every second, 20 kg of water flows through a pipe and falls through a vertical drop of 15 m. The efficiency of the power station is 0.60 (60%). The gravitational field strength g is 10 N / kg. What is the power output?

1. A0.18 kW
2. B1.8 kW
3. C3.0 kW
4. D180 kW

As printed in the paper