Question Detail
Question
If Earth's magnetic field lines pass through Hall probe in opposite direction, then change in reading of voltmeter is
Correct Answer
Option D is the correct answer.
Detailed Explanation
Reversing the direction of the magnetic field through the Hall probe changes the sign of the Hall voltage. The change in reading is equivalent to twice the Earth's magnetic flux density.
Hint
Think about how reversing the magnetic field affects the Hall voltage.