Determination of e/m of Electron | Class 12 Physics in Hindi | J.J. Thomson Method Explained

Welcome to Aleeha Concept!
In this video, we explain the Determination of e/m (charge-to-mass ratio) of an electron using J.J. Thomson’s method, an important topic in Class 12 Physics.

Topics Covered:
What is e/m of an electron?

Historical background: J.J. Thomson's experiment

Construction of the apparatus

Motion of electron in electric and magnetic fields

Condition for undeflected beam

Formula for e/m:

𝑒/m = 2V/B²r²

Significance and applications

This video is useful for students studying under Punjab Board, Federal Board, CBSE, and other Indian/Pakistani boards.

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