Question

The galvanometer constant of a tangent galvanometer depends upon

• A. earths magnetic field
• B. current in the coil
• C. magnetic field of the coil
• D. deflection of the magnetic needle

Answer 1

Answer: (A)

earths magnetic field

The galvanometer constant of a galvanometer can be written as

$k\alpha B_H$
$k=\frac{2r{B}_H}{{\mu }_{o}n}$ ( standard result of magnetism)
depends on the horizontal component of magnetic field.