Free Printable Magnetism

Worksheets

Magnetism

Total questions: 27

Worksheet time: 18mins

Name

Class

Date

30 coils will hold 50 paperclips

Using more coils increases the strength of the electromagnet

15 coils hold twice as many paperclips as 10 coils

The more coils, the fewer paperclips the electromagnet will hold

The distance between geographic north and where a compass needle points is called:

Magnetic Field

Magnetic Declination

Magnetic Inclination

Magnetic Force

Which direction is the North Pole of this electromagnet?

Right

Left

Down

The atoms of a magnetized substance organize into regions in which the magnetic fields of the atoms are aligned.

spins

domains

energy levels

arrangements

In un-magnetized materials the domains are __________ aligned.

super

slightly

randomly

always

What does the first Right Hand Rule tell you?

Fingers point to current and the thumb points toward thumb

Fingers are the magnetic field & thumb direction of current

Fingers are current and thumb is direction of magnetic field

Thumbs up is the OK sign for magnetic field to work

Which statement is true about Earth’s magnetic field?

Magnetic field lines run from geographic north to south.

Magnetic field lines start and stop at the surface of Earth

North magnetic pole isn't the same as north geographic pole.

A compass operates using the electric field of Earth.

An electron is over the equator 100 miles above the surface of the Earth. It is at rest with respect to the magnetic field lines of the Earth. What is true about the force on the electron due to the B-field of Earth?

The force points to the east.

The force points toward the west.

The force points upward from the surface of Earth.

The force equals 0 N.

What is the force on the particle?

6.20 x 10^-17 N

5.25 x 10¹⁰ N

2.48 x 10^-18 N

5.25 x 10^-18 N

10.

What is the force on the wire if it is carrying a current of 3.0 A?

3.0 N

0.33 N

300 N

0.0 N

11.

Which statement is true?

Exterior magnetic field lines run from a south pole to a north pole.

Exterior magnetic field lines run from a north pole to a south pole.

There are no magnetic field lines inside a magnet.

Iron is attracted to north pole but repelled from south pole

12.

A positively charged particle from the sun approaches Earth’s magnetic field as shown.

toward the top of the page

into the page

toward the bottom of the page

out of the page

13.

In the Figure, starting from the left what magnetic poles are shown on the two bar magnets?

south, south, north, north

south, north, south, north

north, south, north, south

north, north, south, south

14.

If you cut a bar magnet in half, each half

becomes unmagnetized.

becomes a bar magnet with two poles.

contains one magnetic pole.

is only temporarily magnetized.

15.

How can a permanent magnet be demagnetized?

Cut the magnet in half.

Strike the magnet with a heavy blow.

Heat the magnet up.

both b and c

16.

Which of the following statements describes the interaction between magnetic poles?

Like poles repel each other, and opposite poles attract each other.

Like poles attract each other, and opposite poles repel each other.

Opposite poles repel each other.

Like poles attract each other.

17.

If a secondary coil has 40 turns, and, a primary coil with 20 turns is charged with 50 V of potential difference, then potential difference in secondary coil would be

50 V in secondary coil

25 V in secondary coil

60 V in secondary coil

100 V in secondary coil

18.

Will a transformer work with direct current (d.c.) or alternating current (a.c.)?

a.c. only

d.c. only

Both a.c. and d.c.

19.

What is meant by a step down transformer?

One where the output voltage is the same as the input voltage.

One where the output voltage is larger than the input voltage.

One where the output voltage is smaller than the input voltage.

20.

This picture is an example of a ___________

Step- Up Transformer

Step- Down Transformer

Motor

Generator

21.

Based on this picture, which side will have a higher voltage?

Secondary

Primary

Both sides have the same voltage

Cannot be determined

22.

Changes electrical energy into mechanical energy

generator

electric motor

electromagnet

23.

The closer together a magnet's magnetic field lines are,

the weaker the magnetic field.

the stronger the magnetic field.

the closer they are to the magnet's center.

the closer they are to disappearing.

24.

While electric current is flowing through a wire, what surrounds the wire?

a magnetic field

a glowing light

neutrons

protons

25.

Magnetic field lines inside the solenoid shown are:

clockwise circles as one looks down the axis from the top of the page

counterclockwise circles as one looks down the axis from the top of the page

toward the top of the page

26.

What converts mechanical energy into electrical energy?

Motor

Generator

Electromagnet

Solenoid

27.