Question

If l is the current flowing through a Hall effect sensor and B is the magnetic flux density perpendicular to the direction of the current (in the plane of the Hall effect sensor), the Hall voltage generated is 
1. Directly proportional to l and inversely proportional to B
2. Directly proportional to both l and B
3. Inversely proportional to both l and B
4. Inversely proportional to l and directly proportional to B

Answer 1

Correct Answer - Option 2 : Directly proportional to both l and B

The Hall voltage V_H developed across the Hall sensor is given by

\({V_M} = \frac{{KBI}}{t}\)

Where B is the magnetic flux density

I is the current through hall effect sensor

From the above relation, the Hall voltage is directly proportional to both l and B.