Assertion ( A ): Hall effect is observed in all metals but is very appreciable in semiconductors.
Reason ( R ): Hall effect transducer is very suitable for measurement of magnetic flux density.
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not correct explanation of A
C. A is true R is false
D. A is false R is true
Share your understanding of this question with the correct explanation.