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4.5.5 The d.c. motor

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Question 8

A student investigates the factors affecting the turning effect (torque) on a current-carrying coil situated in a magnetic field. The student can change the strength of the magnetic field and the cross-sectional area of the coil. Which two changes together must decrease the turning effect?

A

decreasing the magnetic field strength and decreasing the area of the coil

B

decreasing the magnetic field strength and increasing the area of the coil

C

increasing the magnetic field strength and decreasing the area of the coil

D

increasing the magnetic field strength and increasing the area of the coil

Markscheme

4.5.5 The d.c. motor Questions

  1. IGCSE
  2. /Physics
  3. /4.5.5 The d.c. motor

31 exam-style questions on CIE IGCSE Physics 4.5.5 The d.c. motor. Each one has a worked solution and a mark scheme showing where the marks go.

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