The Moving Coil Galvanometer

To find the resistance of the galvanometer, we use the relation between current sensitivity, voltage sensitivity, and resistance.

Given:

Unit Conversion:

$S_c%20%3D%205%5C%2C%5Ctext%7Bdiv%2FmA%7D%20%3D%205%20%5Ctimes%2010%5E3%5C%2C%5Ctext%7Bdiv%2FA%7D%20%3D%205000%5C%2C%5Ctext%7Bdiv%2FA%7D$

Calculation:

$S_v%20%3D%20%5Cfrac%7BS_c%7D%7BR%7D%20%5CRightarrow%2020%20%3D%20%5Cfrac%7B5000%7D%7BR%7D$

$R%20%3D%20%5Cfrac%7B5000%7D%7B20%7D%20%3D%20250%5C%2C%5COmega$

Final Answer: $250%5C%2C%5COmega$

Chapter Questions
1 MCQs