Q33 of 9702_w21_qp_12

Question 33

Question 33 of 40

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No letter options?

Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.

A 1, 2 and 3 are correct

B 1 and 2 only are correct

C 2 and 3 only are correct

D 1 only is correct

Topics Tested

9. Electricity

9.1. Electric current

understand that an electric current is a flow of charge carriers

18. Electric fields

18.2. Uniform electric fields

describe the effect of a uniform electric field on the motion of charged particles

22. Quantum physics

22.3. Wave-particle duality

describe and interpret qualitatively the evidence provided by electron diffraction for the wave nature of particles