Exam-style question
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What is the principle behind the Hall effect in a current-carrying conductor?.
- A.It generates a voltage perpendicular to both the current and magnetic field.
- B.It increases the current flow in the conductor.
- C.It decreases the resistance of the conductor.
- D.It generates heat in the conductor.
Model answer
What a good answer should say
- It generates a voltage perpendicular to both the current and magnetic field.
Explanation
Why this works
The Hall effect occurs when a magnetic field is applied perpendicular to the flow of current in a conductor, resulting in a measurable voltage across the conductor. This is crucial for understanding how Hall sensors operate in magnetic field measurements.
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