Question 1:

A solenoid of length 9 cm has 90 turns of radius 3 cm. a) Ignoring end effects, what is its self-inductance? mHI b) At what rate should the current through it change to produce a self-induced emf of 4 mV? A/sA solenoid has 300 turns and its self-inductance is 2.8 mHI. a) What is the flux through each turn when the current is 3 A? b) What is the magnitude of the induced emf when the current changes at 50 A/s? mV? A solenoid inductor has 150 turns. When the current is 6 A, the flux through each turn is 55 /Wb. What is the induced emf when the current changes at 55 A/s m V