Long answer·Standard multi-step (3/5)·Calculator allowed
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Question
A straight conductor of length carries current in a uniform magnetic field of . The conductor is at to the field.
Total: 5 marks
(a) Find the magnitude of the magnetic force. (2 marks)
(b) State when the force would be maximum and when it would be zero. (2 marks)
(c) Name the rule used to determine the direction of force. (1 mark)
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