Displacement Current and Solenoids
A long solenoid with 500 turns per meter carries a current that increases at a constant rate of 50 A/s. At a point 2 cm from the solenoid’s central axis, what is the primary source of the magnetic field?
A
Only displacement current from changing E-field
B
Only conduction current in the solenoid
C
Neither, as Ampère’s Law doesn’t apply here
D
Both conduction current and displacement current
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