State the principle called conservation of energy.
(a(ii))[2]
Calculate the wasted energy if the total input energy is 500 J. Refer to Fig. 4.1 for the information you need.
(a(iii))[1]
Describe the effect of the wasted energy on the air around the light bulb.
(b)[4]
Complete Table 4.1 by stating the form of energy stored in each situation.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “energy can only be transferred OR energy cannot be created or destroyed OR total energy remains the same” …