Photovoltaic (solar) cells are used to generate electricity.

What is the useful energy transfer in a photovoltaic cell? A. light to electrical B. thermal to electrical C. electrical to light D. chemical to electrical

Photovoltaic cells use a renewable energy resource to generate electricity. State two other methods of generating electricity using renewable energy resources.

A domestic solar panel operates with an efficiency of 18%. State one form of energy that is wasted by the solar panel.

For a Sankey diagram representing this solar panel, state the percentage of the input energy that is:

1. transferred as useful electrical energy
2. transferred as wasted energy