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ZeroGravity
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Hi Forum
I am trying to get a better grasp of the relation between electric field and the magnetic field.
The overall question is "What is The origin of selfinductance in a current loop?"
Here are my thourghts:
A battery is connected to a say circular wire with some resistance. The current builds up in the magnetic field and the rest as heat in the wire. The energy U in the magnetic field is U=0.5*L*I^2 L being the selfinductance and I the current. The energy in the magnetic field is "returned" then the battery is removed freom the circuit.
But what is the origin og the Induced EMF(ElectroMotoricForce)?
I know from Feynman's lectures Vol II 13.6. that foro two straight wires the magnetic field from wire one, acts on wire two with a force. But viewed from a refrence frame moving with the electrons, the magnetic field is transformed into an electric field, and the force is now seen as a coulomb force.
Is that the same case for a current loop?
What happens if the reference frame rotates?
Thanks all !
Martin
I am trying to get a better grasp of the relation between electric field and the magnetic field.
The overall question is "What is The origin of selfinductance in a current loop?"
Here are my thourghts:
A battery is connected to a say circular wire with some resistance. The current builds up in the magnetic field and the rest as heat in the wire. The energy U in the magnetic field is U=0.5*L*I^2 L being the selfinductance and I the current. The energy in the magnetic field is "returned" then the battery is removed freom the circuit.
But what is the origin og the Induced EMF(ElectroMotoricForce)?
I know from Feynman's lectures Vol II 13.6. that foro two straight wires the magnetic field from wire one, acts on wire two with a force. But viewed from a refrence frame moving with the electrons, the magnetic field is transformed into an electric field, and the force is now seen as a coulomb force.
Is that the same case for a current loop?
What happens if the reference frame rotates?
Thanks all !
Martin
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