You would like to store 8.1 J of energy in the magnetic fieldof a solenoid. The solenoid has 530 circular turns ofdiameter 7.2 cm distributed uniformly along its 28 cmlength.
A.) How much current is needed?
B.) What is the magnitude of the magnetic field inside the solenoid?
C.) What is the energy density (energy/volume) inside the solenoid?