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A. A solenoid is 6 cm long and has 500 turns of wire. Determine the magnetic...

A. A solenoid is 6 cm long and has 500 turns of wire. Determine the magnetic field in the solenoid when it carries a current of 700 mA.

B. A step-down transformer has 400 turns on the primary and 100 turns on the secondary. If an alternating voltage of 100 Volts is applied to the primary, what is the voltage across the secondary?

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