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A long, narrow solenoid is made from copper wire, with resistivity 1.70 x 10-8 Ω The...

A long, narrow solenoid is made from copper wire, with resistivity 1.70 x 10-8 Ω The wire has a diameter of 0.12 mm and the effective diameter of the solenoid is 1.85 cm. The solenoid is made of 3000 closely packed turns. If a voltage supply is initially 12.00 volts and the voltage is increased steadily at the rate of 0.25 volts/sec, at what rate will the magnetic field increase inside the solenoid.

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