- #1
holacola
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Homework Statement
You have a circuit with current I running through a solenoid. You insert a small piece of iron into the coil; what happens?
Homework Equations
d(Magnetic Flux)/dt = -EMF
The Attempt at a Solution
Iron is diamagnetic, so inserting it will decrease the magnetic field inside the inductor. Faraday's Law and Lenz's Law tell us that a changing flux induces an EMF to create a field opposing this change in flux. Therefore, my thought is that the current increases, then decreases back to its original value. Does that seem right?