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Physics

Motional Electromotive Force

गति-जनित विद्युतवाहक बल

In this Class 12 Physics topic from Electromagnetic Induction, students learn how a conductor moving through a magnetic field develops an induced potential difference, known as motional electromotive force. The effect arises because the magnetic Lorentz force separates charges inside the conductor. Students study the relation ε = Bℓv for a rod moving perpendicular to the field, understand how the expression changes with angle, and determine the direction of induced current using Fleming’s right-hand rule. The topic connects magnetic motion with practical generators and electromagnetic devices.

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