An air cored solenoid has 100 turns of wire, the core has a diameter of 2cm and the length of the winding over the core is 20cm. The resistance of the winding is 4 Ohms. A 12 volt source is placed across the terminals.
calculate
(A) The Flux generated in the core
(B) The Flux density in the core
(C) The inductance of the solenoid