Question

A long, straight wire is carrying a current of 5.0 A in the direction shown in the figure. The point P is 0.040 m from the wire.

0.04

What is the direction of the magnetic field at point P due to the current in the wire?

Question 23 options:

	1) toward the bottom of the page
	2) to the left of the page
	3) out of the plane of the page
	4) into the plane of the page
	5) to the right of page

Answer 1

here ,

the current in the wire , I = 5.0 A

the distance of point , d = 0.40 m

the magnetic feild , B = uo * I /(2* pi * d)

B = uo * 5 / ( 2 * pi * 0.40)

B = 2.50 *10^-6 T

the magnetic feild is 2.50 *10^-6 T

by using right hand thumb rule ,

the direction magnetic feild at point P is (3) out of the plane of the page