Q. From a waterfall, water is falling down at the rate of $100\ kg/s$ on the blades of turbine. If the height of the ball is $100\ m$, then the power delivered to the turbine is approximately equal to
A) $100\ kW$
B) $10\ kW$
C) $1\ kW$
D) $1000\ kW$
Explanation
(a) $P = \left( \frac{m}{t} \right)gh = 100 \times 10 \times 100 = 10^{5}W = 100\ kW$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.