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Electromagnetism

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Question 19

An electron moves in a circle of radius 4.0 cm in a uniform magnetic field of flux density 150 mT150\text{ mT}150 mT.

What is the momentum of this electron?

A

9.6×10−17 kg m s−19.6 \times 10^{-17}\text{ kg m s}^{-1}9.6×10−17 kg m s−1

B

9.6×10−19 kg m s−19.6 \times 10^{-19}\text{ kg m s}^{-1}9.6×10−19 kg m s−1

C

9.6×10−20 kg m s−19.6 \times 10^{-20}\text{ kg m s}^{-1}9.6×10−20 kg m s−1

D

9.6×10−22 kg m s−19.6 \times 10^{-22}\text{ kg m s}^{-1}9.6×10−22 kg m s−1

Markscheme

Electromagnetism Questions

  1. A Level
  2. /Physics
  3. /Electromagnetism

34 exam-style questions on OCR A A Level Physics Electromagnetism, covering Magnetic fields, Motion of charged particles, and Electromagnetism. Each one has a worked solution and a mark scheme showing where the marks go.

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