Consider an infinitely long, straight conducting wire carrying a constant and uniform free current density jf = jf k^ along the axis of the wire, which coincides with the z axis. the wire has a circular cross section of radius a. the wire is made of a diamagnetic conducting material of permeability î¼.
a) by taking advantage of the symmetry of the problem and of maxwell's equations, find the field h inside the wire.
b) find the expression for the magnetization m in the material.

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.

96.77 amp

explanation:

rl = 250/100 = 2.5 ohms.

egl = 250 + (100 × 0.1) + 2 = 262 v.

at 700 r.p.m., eg2 = 262 × 700/1000 = 183.4 v.

if ia is the new current, then eg2 - 2 - (ia × 0.1) = 2.5 ia

which means this will give ia = 96.77 amp.