Solenoids produce magnetic fields that are relativelyintense for the amount of current they carry. To make a directcomparison, consider a solenoid with 57 turns per centimeter, aradius of 1.05 cm, and a current of 0.144 A. Calculate the magnetic field at the center of the solenoid.
What current must a long, straight wire carry tohave the same magnetic field as that found above? Let the distancefrom the wire be the same as the radius of the solenoid, 1.05cm.