WorksheetsMagnets & Currents Quiz
Total questions: 13
Worksheet time: 11mins
Which of the following statements about the properties of magnets is incorrect?
Has a magnetic field around it
Has two opposite poles - North and South
Will attract magnetic materials
Will attract non-magnetic materials
All strongly magnetic materials contain iron, nickel, or cobalt. What is the other terminology for strong magnetic materials?
Alcomax
Ferromagnetics
Mumetal
Magnadur
A student suggests three methods for demagnetizing a piece of steel.
- Placing it in east-west direction and hammering it hard.
- Placing it in east-west direction and heating it until red-hot.
- Removing it slowly from a coil carrying alternating current.
Which of the methods will demagnetize the piece of steel?
1 only
2 only
3 only
1, 2 and 3
What is the most effective method of demagnetizing a bar magnet?
Placing the magnet in a solenoid carrying a large alternating and gradually decreasing the current.
Placing the magnet in a solenoid carrying a large direct current and gradually decreasing the current.
Placing the magnet in a solenoid that produces a magnetic field in the opposite direction to the magnet.
Placing the magnet next to an identical bar magnet with its poles in the opposite direction.
Choose all the non-magnetic materials listed below.
Brass
Copper
Nickel
Cobalt
Choose the correct statement (s) listed below.
Magnetic field exists around magnet and exerts forces on magnetic materials in it.
The magnetic field lines run from the S poles to the N poles of the magnet.
Magnetic fields can be investigated using a small compass.
The magnetic field is strongest where the field lines are closest together.
What is the name of position x in the picture?
Magnetic field
Magnetic north
Neutral point
Magnetic south
The Earth has a magnetic field. Where is the location of the Earth's magnetic S pole?
South pole
North pole
Equator line
Everywhere on Earth
In the right-hand grip rule, your thumb points in the ....
direction of field lines
electron movement
conventional current direction
electric field
The strength of magnetic field in a wire increases when ...
the current flow increases
the electric field increases
there is no barrier between the wire and magnet
it is close to the wire
In a current-carrying coil, the magnetic field is similar to that from ...
a bar magnet
a U-shaped magnet
a solenoid
Relatively easy to magnetise but their magnetism is only temporary.
Non-magnetic materials
Soft magnetic materials
Hard magnetic materials
Ferromagnetics
What is the most effective method to make a magnet?
Place a magnetic material near a magnet
Stroke a magnetic material using a magnet
Place a magnetic material in a long coil of wire and pass a large DC
Place a magnetic material in a long coil of wire and pass a large AC
