# Test Physics Num 2

9 Questions | Total Attempts: 167  Settings  • 1.
The pointer on a compass is the north pole of a small magnet. If a compass were placed next to a bar magnet, as shown above, in what direction would the pointer point?
• A.

Up

• B.

Left

• C.

Right

• D.

Down

• 2.
A current-carrying wire in a magnetic field is subject to a magnetic force. If the current in the wire is doubled, what happens to the magnetic force acting on the wire?
• A.

It is quartered

• B.

It is halved

• C.

It is unchanged

• D.

It is doubled

• 3.
A positively charged particle in a uniform magnetic field moves in a circular path in the clockwise direction, parallel to the plane of the page. In what direction do the magnetic field lines point?
• A.

Out of the page

• B.

Into the page

• C.

To the left

• D.

To the right

• E.

In a clockwise pattern parallel to the plane of the page

• 4.
What should one do to maximize the magnitude of the magnetic force acting on a charged particle moving in a magnetic field?   I. Maximize the strength of the magnetic field  II. Minimize the particle’s velocity III. Ensure that the particle is moving in the same direction as the magnetic field lines
• A.

I only

• B.

I and III only

• C.

I and II only

• D.

I, II, and III

• 5.
A charged particle is moving in a circular orbit in a magnetic field. If the strength of the magnetic field doubles, how does the radius of the particle’s orbit change?
• A.

Is dubel

• B.

It gets halved

• C.

Itget tripel

• 6.
Which of the following is not a possible trajectory of a charged particle in a uniform magnetic field?
• A.

שמאלה

• B.

חצי עיגול למעלה

• C.

קו יורד למטה וימינה

• 7.
Two wires carry current in opposite directions. Which of the following graphs represents the magnetic force acting on each wire?
• A.

Two up

• B.

One up one down

• C.

Two-wire carry current in opposite directions repel each other

• D.

Two down

• 8.
A current-carrying wire passes through a uniform magnetic field, as shown above. At which point is the magnetic field the strongest?
• A.

A

• B.

B

• C.

C

• D.

D

• 9.
Which one do you like?
• A.

Option 1

• B.

Option 2

• C.

Option 3

• D.

Option 4 Back to top