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📘 Light becomes electrical current

Light becomes electrical current

lessons

~10 min

to learn

🔬 Science

subject

Adults

level

Start the course →

What you’ll learn

The cell
The semiconductor
The junction
The contacts
The current
The voltage
The module
The inverter
Efficiency
The loop

Questions this course answers

What creates charge carriers in a solar cell?

Photons can generate mobile electrons and holes in the semiconductor.

What does the junction field do?

The internal field drives opposite carriers toward different contacts.

Why connect cells in series?

Series voltages add across connected cells.

What does an inverter convert?

The inverter conditions PV DC for AC loads or the grid.

What does efficiency measure?

Efficiency compares electrical output with incoming solar energy.

Grounded in trusted sources

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Every Wunder lesson is built from real, reputable sources — never invented.

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