Physics-Motional EMF
NEET Physics Motional EMF MCQ Question
Type: MCQ-fact-Medium-Class 12
What causes the separation of charges in a rotating rod in a magnetic field?
A
The Lorentz force acting on free electrons.
B
The friction between the rod and the ring.
C
The resistance of the rod material.
D
The magnetic field strength increasing.
Correct Answer
Option A
Detailed Explanation
The Lorentz force acts on free electrons in the rod, causing them to move towards the outer end and resulting in a separation of charges that produces an emf across the ends of the rod.
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