- #1

MS La Moreaux

- 97

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- TL;DR Summary
- Faraday's Law versus Motional Emf

Visualize a rectangular bare wire circuit with one side loose so that it can slide along the adjacent sides and thereby change the size of the circuit. There is a static magnetic field orthogonal to the plane of the circuit and linking the circuit. There will be a motional emf in the moving wire, due to its motion through the magnetic field.

Faraday's Law states that the changing magnetic flux linking the circuit results in an emf in the circuit. This would be in addition to the motional emf, since the two principles are independent of each other. The value of the motional emf is equal to the value given by Faraday's Law, and therefore the total emf would be twice the actual value.

What is the resolution of this contradiction?

Faraday's Law states that the changing magnetic flux linking the circuit results in an emf in the circuit. This would be in addition to the motional emf, since the two principles are independent of each other. The value of the motional emf is equal to the value given by Faraday's Law, and therefore the total emf would be twice the actual value.

What is the resolution of this contradiction?

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