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CAIE A-Level Physics AS 9.1.3 Q It Questions

Use Q = It to calculate charge transferred by an electric current.

Syllabus
2028–2030
Course
Physics 9702
Level
AS

Exam points

  • Use Q = It to calculate charge transferred by an electric current.

CAIE A-Level Physics AS 9.1.3 Q It Questions question 1

[Maximum number: 1]

A radioactive source produces a beam of α\alpha-particles in a vacuum. The average current caused by the α\alpha-particles in the beam is 1.5×10−9 A1.5 \times 10^{-9} \mathrm{~A}.

The beam is incident on a metal target.
What is the average number of α\alpha-particles hitting the metal target in a time of 3.0 s ?

A

4.7×1094.7 \times 10^{9}

B

9.4×1099.4 \times 10^{9}

C

1.4×10101.4 \times 10^{10}

D

2.8×10102.8 \times 10^{10}

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