University:
Santa Fe College
Course:
ETS 2527C | Electromechanical Components and Mechanisms
Academic year:

2024
Views:

91

Pages:

3
Author:

Jabin F.

Magnetostatics Static magnetic field which should follow properties → B is independent of time (t) ∇ · B = 0, or ∮ B · ds = 0 I → steady current Independent of time Should be uniform along the length of wire IA = IB Cases → at rest will have no current moving at constant velocity, then current is steady charge is accelerated, so produce I, but I is not steady Ques 1: Which one of the following is an impossible magnetic field B? Impossible magnetic field: ∇ · B ≠ 0 Option (a): B = 3xz²ŷ - mz³ẑ ∇ · B = 6xz² - 6xz² = 0 This is a possible magnetic field. Option (b): B = -αnyŷ + yz²ŷ + (2yz - z³/3)ẑ ∇ · B = -2y + yz² + (2y - z²) = 0 This is a possible magnetic field.