E & M - RHR 1 and 2

Front

What is the direction of the magnetic field at the center of a current-carrying loop?

Back

The magnetic field is directed into the screen.

Front

How does an electron behave in a magnetic field?

Back

An electron is deflected out of the page when in a magnetic field.

Front

What happens to a compass needle placed below a current-carrying wire?

Back

The north pole of the compass needle will deflect down.

Front

What is the effect of a magnetic field on a stationary positive charge?

Back

There is no magnetic force acting on a stationary positive charge.

Front

What is the direction of the magnetic field produced by a long straight wire carrying current to the west, at a point directly below the wire?

Back

The direction of the magnetic field is south.

Front

What is the right-hand rule (RHR) used for in electromagnetism?

Back

The right-hand rule is used to determine the direction of the magnetic field around a current-carrying conductor.

Front

How can you determine the direction of force on a charged particle moving in a magnetic field?

Back

Use the right-hand rule: point your thumb in the direction of the velocity of the positive charge, and your fingers in the direction of the magnetic field; the force is directed out of your palm.

Front

What is the relationship between current direction and magnetic field direction in a straight wire?

Back

The magnetic field direction is determined by the right-hand rule: if the thumb points in the direction of the current, the curled fingers show the direction of the magnetic field.

Front

What is the effect of increasing current on the strength of the magnetic field produced by a wire?

Back

Increasing the current increases the strength of the magnetic field produced by the wire.

Front

What is the significance of the north pole of a compass in relation to magnetic fields?

Back

The north pole of a compass points in the direction of the magnetic field lines.