2. A coreless solenoid is 10 CM long with a diameter of 5 CM and 1000 turns of wire. a. What is the magnitude of a magnetic field produced by a DC current of 3 A flowing through the solenoid? b. We add a core of silicon steel and apply a sinusoidal current of 3 A at 60 Hz. Determine the magnetic field as a function.

Fig: 1