Fig. 3.1 presents a simplified diagram of a solar cell. Fig. 3.1 is labelled with: light, negative contact, black coating, positive contact, conducting material in solar cell.
(a)[2]
Describe the energy transfer in the solar cell.
(b)[1]
Suggest how the black coating helps the solar cell transfer more energy.
(c(i))[2]
Calculate the power output of the cell.
(c(ii))[1]
State the meaning of the term kilowatt-hour (kWh).
(c(iii))[3]
Calculate the number of solar cells needed to produce energy for one household. Give your answer as a whole number of solar cells.
Worked solution & mark scheme
This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: “(electromagnetic) radiation / light coming from the Sun” …