An electric motor raises a load, as shown in Fig. 4.1.
(a(i))[3]
Calculate the work done on the load.
(a(ii))[2]
Describe one way in which energy is wasted while the electric motor lifts the load.
(b)[3]
A hydroelectric power station produces electrical power by using the energy stored in water behind a dam. Describe how a hydroelectric power station generates electrical power.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “12 J.” …