(c)
Time =
minutes (3)
When the modules are fitted on a roof, the householder gets an extra electricity meter to
measure the amount of energy transferred by the photovoltaic cells.
(i)
The diagram shows two readings of this electricity meter taken three months apart.
The readings are in kilowatt-hours (kWh).
21 November
00044
21 February
00194
Calculate the energy transferred by the photovoltaic cells during this time period