Exam-style question
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What is the effect of reversing the direction of the current in a Hall effect sensor?.
- A.The Hall voltage direction remains the same.
- B.The Hall voltage direction reverses.
- C.The Hall voltage becomes zero.
- D.The Hall voltage increases.
Model answer
What a good answer should say
- The Hall voltage direction reverses.
Explanation
Why this works
The cause is the reversal of current direction. The mechanism involves the change in the direction of the Lorentz force acting on the charge carriers, which alters the charge separation within the conductor.
The effect is that the Hall voltage direction reverses, leading to a change in the output signal of the sensor, which is crucial for applications requiring directional sensing.
Common mistake
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