Author Question: A thin infinitely large current sheet lies in the y-z plane. Current of magnitude Js per unit length ... (Read 70 times)

dakota nelson · **on:** Jul 28, 2018

A thin infinitely large current sheet lies in the y-z plane. Current of magnitude J_s per unit length along the z axis travels in the y-axis direction, which is up out of the page. Which diagram below correctly represents the direction of the magnetic field on either side of the sheet?

a.

b.

c.

d.

e.

Question 2

A solenoid consists of 100 circular turns of copper wire. Parts of three turns, A, B and C, are shown below.

When a current flows through the coil,

a.
both A and C are repelled by B.

b.
A is attracted to B; C is repelled by B.

c.
neither A nor C is attracted to or repelled by B.

d.
A is repelled by B; C is attracted to B.

e.
both A and C are attracted to B.