Help please! The fisrt person that helped me got thwm all wrong.Please help with
ID: 1774837 • Letter: H
Question
Help please! The fisrt person that helped me got thwm all wrong.Please help with A,B,C,D . Thank you
Calculate the magnetic field in the solenoid. Problem 21.42 A solenoid 30.0 cm long and with a cross-sectional area of 0.540 cm contains 450 turns of wire and carries a current of 80.0 A Submit My Answers Give Up Part B Calculate the energy density in the magnetic field if the solenoid is filled with air J/m2 Submit My Answers Give Up Part C Calculate the total energy contained in the coil's magnetic field (assume the field is uniform). Submit My Answers Glve Up Part D Calculate the inductance of the solenoid.Explanation / Answer
(A) B = u0 n I
= (4pi x 10^-7)(450/0.30)(80)
= 0.151 T
(B) Energy density = B^2 / (2 u0)
= 9048 J/m^3
(C) total energy = (9048) (0.30) (0.540 x 10^-4)
= 0.15 J
(D) L = u0 N^2 A / l
= (4pi x 10^-7) (450^2)(0.540 x 10^-4) / 0.30
= 4.58 x 10^-5 H
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