If the Earth's magnetic field lines pass through the Hall probe in opposite direction, then the change in reading of voltmeter is

Question

Quizplus · Accepted Answer

When the direction of the Earth's magnetic field lines is reversed through a Hall probe, the change in the voltmeter reading corresponds to twice the Earth's magnetic flux density. This is because the Hall voltage is directly proportional to the magnetic field, and reversing the field direction effectively changes the sign of the field, resulting in a total change of twice the original value.

If the Earth's Magnetic Field Lines Pass Through the Hall