Magnetic Fields by Jared Rovny, PhD

Name: Magnetic Fields
Uploaded: 2016-12-16
Duration: 7 min 29 s
Description: The lecture Magnetic Fields by Jared Rovny, PhD is from the course Magnetism.

About the Lecture

The lecture Magnetic Fields by Jared Rovny, PhD is from the course Magnetism.

Included Quiz Questions

How will the magnetic field change at a certain location if the current through a wire and the distance from the wire to that location are doubled?

It will remain unchanged
It will double
It will halve
It will quarter
It will quadruple

Which of the following is true about magnetic field lines?

They form closed loops and point from north pole to south pole outside of a magnet
They point from south to north pole outside of a magnet and form closed loops
They point away from north charges
They point in an outward radial direction from a current which is flowing out of the page
They are less dense inside of magnets

A current is flowing through a long straight wire. How is the direction of the magnetic field around the wire determined?

Place the right-hand thumb in the direction of the current in the wire. The circular path which the other four fingers of the right hand curl around the wire would give the magnetic field direction around the wire.
The direction of the magnetic field is in the outward radial direction from the wire.
The direction of the magnetic field is in the inward radial direction from the wire.
The direction of the magnetic field is parallel to the direction of the current flow and the magnetic field reduces in magnitude at larger distances from the wire.
Place the left-hand thumb in the direction of the current in the wire. The circular path which the other four fingers of the left hand curl around the wire would give the magnetic field direction around the wire.