How Do Solar Panels Work?

Solar panels are large, flat devices made up of solar cells that convert sunlight into electricity. Each cell, composed of silicon, acts as a semiconductor. When sunlight hits the cells, it energizes electrons, causing them to flow and generate electricity. The cells are structured in layers, with p-type and n-type silicon creating a barrier that electrons cross when activated by sunlight, producing an electric current.

What is the primary function of solar cells in a solar panel?

• To convert sunlight into electricity

• To store sunlight for later use

• To reflect sunlight away from the panel

• To insulate the panel from heat

What material is primarily used in solar cells to facilitate electricity generation?

• Copper

• Silicon

• Iron

• Aluminum

How does silicon in solar cells behave under normal conditions?

• As a semiconductor

• As a superconductor

• As an insulator

• As a conductor

What happens when sunlight hits the solar cell?

• It heats up the silicon

• It causes electrons to be released from silicon

• It gets absorbed without any effect

• It reflects off the surface

What is the role of the p-type and n-type layers in a solar cell?

• To block sunlight

• To facilitate electron movement

• To create a magnetic field

• To store energy