CAIE IGCSE Physics 4.5.5.1 A Current Carrying Coil in a Magnetic Questions
Review how a current-carrying coil turns in a magnetic field and how current, turns and field strength affect torque.
- Syllabus
- 2026–2028
- Course
- Physics 0625
Exam points
- explain why a current-carrying coil experiences a turning effect in a magnetic field
- determine how current, number of turns and magnetic field strength change turning effect
- calculate or compare turning moments and identify conditions for maximum motor torque
CAIE IGCSE Physics 4.5.5.1 A Current Carrying Coil in a Magnetic Questions question 1
[Maximum number: 1]
A class is designing a d.c. motor. To achieve a greater turning effect, three suggestions are made.
1 Have a larger current in the coil of the motor.
2 Have a stronger magnet in the motor.
3 Put a larger number of turns on the coil.
Which suggestions will help to increase the turning effect?
A
1, 2 and 3
B
1 and 2 only
C
1 and 3 only
D
2 and 3 only
A
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