The magnetic field at the center of a solenoid L = 65 cm long is B = 0.42 T when a current of I = 3.5 A flows through the solenoid wire.    Part (a)  Solve the formula for the magnetic field near the center of a long, tightly wound solenoid for the number of turns, N, in the solenoid. The expression should be in terms of the given variables.  Part (b)  Calculate the value of the number of turns, N.

Question

 The magnetic field at the center of a solenoid L = 65 cm long is B = 0.42 T when a current of I = 3.5 A flows through the solenoid wire.

 

 Part (a)  Solve the formula for the magnetic field near the center of a long, tightly wound solenoid for the number of turns, N, in the solenoid. The expression should be in terms of the given variables. 
Part (b)  Calculate the value of the number of turns, N

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Magnetic Effects of Current

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