Lesson: Chapter 11 — Electronics

The transistor at work 5 of 5 Reset answers

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Question 5

What happens to an LDR's resistance in the dark?

A It becomes zero B It stays the same C It rises to around 100 kΩ D It falls to a few ohms

The right answer is the one marked above.

It rises to around 100 kΩ. That raises the base voltage in activity 11.6, switching the lamp on.

Answer the question to continue.