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Edexcel IGCSE Physics 6.14 Changing Magnetic Force Questions

Compare how changing current or magnetic-field strength and direction affects force on a conductor, then interpret practical measurements and graph lines.

Syllabus
First assessment 2019
Course
Physics 4PH1

Exam points

  • Explain how increasing current or magnetic-field strength increases the force on a current-carrying conductor.
  • Interpret experimental graph lines after current changes, using the gradient and zero-current reading to show the change in force.
  • Explain how reversing current changes the force direction, and why reversing both current and magnetic field leaves it unchanged.

Edexcel IGCSE Physics 6.14 Changing Magnetic Force Questions question 1

[Maximum number: 2]

Diagram 1 shows some apparatus used to demonstrate the magnetic force on a current-carrying wire in a magnetic field.

Diagram 1

Diagram 1

The wire has a mass of 6.5 g .

Explain one method of increasing the magnitude of the magnetic force on the wire.

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