If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Course: Class 12 Physics (India) > Unit 4

Lesson 14: Moving coil galvanometer
Science
Class 12 Physics (India)
Moving charges and magnetism
Moving coil galvanometer
© 2024 Khan AcademyTerms of usePrivacy PolicyCookie Notice

Working of a moving coil galvanometer

Google Classroom

Problem

As current runs through a galvanometer, the pointer moves ϕ=45°from initial position to final position as shown below.
Initial position
Final position
The magnetic moment of the wire is m and the magnetic field linked with the wire is B.
What is the angle between m and B in the initial and final position?
  • Initial position:
    • Your answer should be
    • an integer, like 6
    • a simplified proper fraction, like 3/5
    • a simplified improper fraction, like 7/4
    • a mixed number, like 1 3/4
    • an exact decimal, like 0.75
    • a multiple of pi, like 12 pi or 2/3 pi
    °
  • Final position:
    • Your answer should be
    • an integer, like 6
    • a simplified proper fraction, like 3/5
    • a simplified improper fraction, like 7/4
    • a mixed number, like 1 3/4
    • an exact decimal, like 0.75
    • a multiple of pi, like 12 pi or 2/3 pi
    °