Answer:
Step-by-step explanation:
B = Magnetic field =
= Vacuum permeability =
N = Number of turns = 1270
= Length of solenoid = 93.9 cm = 0.939 m
= Current = 7.8 A
A = Area of solenoid =
Energy density of a solenoid is given by
The energy density of the magnetic field inside the solenoid is
Energy is given by
The total energy in joules stored in the magnetic field is
.