Fig. 3.1 depicts black solar panels fitted on the roof of a house, together with a large rechargeable battery. Diagram labels: solar panels, electric cable, large rechargeable battery. The solar panels generate electricity and have a maximum power output of 3.5 kW. The solar panel efficiency is 16%.
(a)[2]
State and explain one advantage of using black solar panels.
(b)[3]
Calculate the power received by the solar panels from the Sun.
(c)[1]
State the difference between alternating current and direct current.
(d)[1]
Suggest one advantage of storing energy in the large rechargeable battery.
(e)[3]
Calculate the charge that flows into the battery when the current is 4.0 A for 2.0 hours.
Worked solution & mark scheme
This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: “more electrical output is produced OR solar panels operate more efficiently” …