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A technician wraps wire around a tube of length 40 cm having a diameter of 7.8 cm. When the windings are evenly spread over the full length of the tube, the result is a solenoid containing 560 turns of wire.
(a) Find the self-inductance of this solenoid.
(b) If the current in this solenoid increases at the rate of 6 A/s, what is the self-induced emf in the solenoid?
mV
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