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4.2.1a Positive and negative charge

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Question 4

In a vacuum tube, a heated metal filament releases particles.

What is the name of this emission process, and what is the electrical charge of the emitted particles?

A

Thermionic emission; positive

B

Thermionic emission; negative

C

Photoelectric effect; positive

D

Photoelectric effect; negative

Markscheme

4.2.1a Positive and negative charge Questions

  1. IGCSE
  2. /Physics
  3. /4.2.1a Positive and negative charge

145 exam-style questions on CIE IGCSE Physics 4.2.1a Positive and negative charge. Each one has a worked solution and a mark scheme showing where the marks go.

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