A moving coil galvanometer has a coil with |EMFJEEMAIN2019

JEE MAIN 2019

09-04-2019 S2

Question

A moving coil galvanometer has a coil with 175 turns and area 1 cm 2 . It uses a torsion band of torsion constant $10^{-6} \mathrm{~N}-\mathrm{m} / \mathrm{rad}$. The coil is placed in a magnetic field B parallel to its plane. The coil deflects by $1^{\circ}$ for a current of 1 mA . The value of B (in Tesla) is approximately

Select the correct option:

$10^{-4}$

$10^{-2}$

$10^{-1}$

$10^{-3}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution