# Fundamentals of Physics Study Set 2

Physics & Astronomy

## Quiz 28 :Magnetic Fields

Showing 1 - 20 of 51
Units of a magnetic field might be:
Free
Multiple Choice

D

The direction of the magnetic field in a certain region of space is determined by firing a test charge into the region with its velocity in various directions in different trials.The field direction is:
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Multiple Choice

A

An electron is moving north in a region where the magnetic field is south.The magnetic force exerted on the electron is:
Free
Multiple Choice

A

A magnetic field exerts a force on a charged particle:
Multiple Choice
An electron travels due north through a vacuum in a region of uniform magnetic field that is also directed due north.It will:
Multiple Choice
An electron and a proton are both initially moving with the same speed and in the same direction at 90˚ to the same uniform magnetic field.They experience magnetic forces, which are initially:
Multiple Choice
A hydrogen atom that has lost its electron is moving east in a region where the magnetic field is directed from south to north.It will be deflected:
Multiple Choice
A beam of electrons is sent horizontally down the axis of a tube to strike a fluorescent screen at the end of the tube.On the way, the electrons encounter a magnetic field directed vertically downward.The spot on the screen will therefore be deflected:
Multiple Choice
An electron moves in the negative x direction, through a uniform magnetic field that is in the negative y direction.The magnetic force on the electron is:
Multiple Choice
In the formula F ⃗=qv ⃗×B ⃗ :
Multiple Choice
The magnetic force on a charged particle is in the direction of its velocity if:
Multiple Choice
A static magnetic field CANNOT:
Multiple Choice
At any point the magnetic field lines are in the direction of:
Multiple Choice
J.J.Thomson's experiment, involving the motion of an electron beam in mutually perpendicular and fields, gave the value of:
Multiple Choice
A charged particle is projected into a region of uniform, parallel, and fields.The force on the particle is:
Multiple Choice
An electron enters a region of uniform perpendicular and fields.It is observed that the velocity of the electron is unaffected.A possible explanation is:
Multiple Choice