Question

Among the following statements:

A) In $\tan A$ position of deflection magnetometer $B$ and $B_H$ are perpendicular

B) In $\tan B$ position of deflection magnetometer $B$ and $B_H$ parallel

• A. A true & B false
• B. A false & B true
• C. A and B are true
• D. A and B are false

Answer 1

The correct option is A A true & B false

In $\tan A$ position , the arms are in east-west direction and the compass needle is in north-south direction and the bar magnet is kept parallel to the arms, perpendicular to the compass needle.
In $\tan B$ position , the arms are in north-south direction and the compass needle is in same direction , the magnet is kept in east - west direction , perpendicular to the compass needle.