1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Magnetic Moment and Principal Quantum No of electron

  1. Mar 25, 2015 #1
    1. The problem statement, all variables and given/known data
    The magnetic moment of a revolving electron around the nucleus varies with principal quantum number as ?

    2. Relevant equations
    mvr = nh/2π

    3. The attempt at a solution
    i know μ = (qωr2 )/ 2

    and after that i am substituting values for r and i get μ∝ n2 but that is wrong.Help !
  2. jcsd
  3. Mar 26, 2015 #2

    Simon Bridge

    User Avatar
    Science Advisor
    Homework Helper

    Welcome to PF;
    How do you know it's wrong?

    Doesn't v vary with n also?
  4. Mar 30, 2015 #3
    Well it was a MCQ ...the answer is μ ∝ n .

    I got it though . Yup , v ∝ 1/n and r ∝ n2 . [ r = 0.529 n2 / Z Angstrom & v = 2.1 x 106 x Z / n m/s ]

    Damn , this was an easy one , should have got it right in the first place ..!
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted

Similar Threads - Magnetic Moment Principal Date
Magnetic Moment of a crystal Oct 5, 2017
Magnetic moment and Minimum energy May 6, 2017
Magnetic Moment of loop Apr 1, 2017
Magnetic Torque on Dipole; Oscillating Magnet question Mar 19, 2017
A gyromagentic ratio for a cylinder Nov 27, 2016