Please help and explain the direction of Magnetic Field For a long straight wire
ID: 2303077 • Letter: P
Question
Please help and explain the direction of Magnetic Field
For a long straight wire carrying a current I, the magnitude of the magnetic field, B produced at a perpendicular distance, r from a wire is given by where is the magnetic permeability of free space and is a constant. The amount of electric current, I is measured in Amperes (A) and r is measured in m. Thus the circle formed by the distance r from the wire has magnetic field of the same magnitude. However, the direction of the magnetic field at a point on the circle is the tangent at that point. Since there are two possible directions for the tangent, the direction, by convention, is determined by the right hand rule. Learn more using java applet simulations. Study the applet carefully and answer the following questions.Explanation / Answer
The magnetic field direction based on the charge and direction of the velocity.......
Direction of the magnetic field acn be two types 1) into the plane
2) out of the plane
if a conductor placed is erect and the current passing through it
ANSWER is A.
and the current passing in the upward direction the direction of the magnetic field is into the plane.
and the current is in the downward direction the field is out of the plane