Question 23
[Maximum number: 1]
Which row gives the metal used to make the core of an electromagnet and one property of the electromagnet?
metal
property
iron
permanent magnet
iron
temporary magnet
steel
permanent magnet
steel
temporary magnet
IGCSE Physics 4.1 Simple phenomena of magnetism Question Bank
4.1 Simple phenomena of magnetism
- 4.1.1—Forces between magnetic poles and
- 4.1.2—Induced magnetism
- 4.1.3—Differences between the properties of
- 4.1.4—Difference between magnetic and
- 4.1.5—Magnetic field as a region in which a
- 4.1.6—Pattern and direction of magnetic
- 4.1.7—Direction of a magnetic field at a
- 4.1.8—Plotting of magnetic field lines with
- 4.1.9—Uses of permanent magnets and
- 4.1.10—Magnetic forces are due to
- 4.1.11—Relative strength of a magnetic field
Question 23
[Maximum number: 1]
An unmagnetised piece of soft iron is placed close to a strong permanent magnet, as shown.
What is the induced polarity of end X of the soft iron and in which direction does the magnetic force act on the soft iron?
polarity of end X
direction of force
on the soft iron
N
to the left
N
to the right
S
to the left
S
to the right
Question 23
[Maximum number: 1]
The magnetic field of a bar magnet can be represented by magnetic field lines.
Which diagram shows two magnetic field lines correctly?
Question 24
[Maximum number: 1]
The diagram shows part of the magnetic field between two bar magnets.
Which statement about the ends of the magnets is correct?
A
X and Y are both N poles.
B
X and Y are both S poles.
C
X is an N pole and Y is an S pole.
D
X is an S pole and Y is an N pole.
Question 24
[Maximum number: 1]
Which row describes suitable materials for use in a temporary magnet and in a permanent magnet?
temporary
magnet
permanent
magnet
soft iron
soft iron
soft iron
steel
steel
soft iron
steel
steel
Question 24
[Maximum number: 1]
Which metal can be attracted by a magnet?
A
zinc
B
lead
C
iron
D
copper
Question 24
[Maximum number: 1]
A hard magnetic material can be used to make a permanent magnet.
A soft magnetic material can be used to make a temporary magnet.
Which row shows whether iron and steel are hard or soft magnetic materials?
iron
steel
hard
hard
hard
soft
soft
hard
soft
soft
Question 24
[Maximum number: 1]
Which metal could be used for a permanent magnet and which metal could be used for the core of an electromagnet?
permanent
magnet
core of
electromagnet
iron
copper
iron
steel
steel
copper
steel
iron
Question 24
[Maximum number: 1]
The diagram shows a bar magnet at rest on a smooth horizontal surface. A length of soft-iron wire is held parallel to the magnet.
The wire is released.
What happens?
A
The wire moves away from the magnet.
B
The wire moves towards the magnet.
C
The wire's centre stays in its present position and the wire rotates through in a clockwise direction.
D
The wire's centre stays in its present position and the wire rotates through in an anticlockwise direction.
Question 24
[Maximum number: 1]
In which way are a bar magnet and an electromagnet similar?
A
A bar magnet and an electromagnet are always magnetised when stored.
B
A bar magnet and an electromagnet can both be used to separate magnetic and non-magnetic materials.
C
A bar magnet can be made of steel and an electromagnet uses a steel core.
D
The magnetic field strength of a bar magnet and of an electromagnet can both be varied.