Quiz
0654 Simple Phenomena of Magnetism Quiz
Perguntas do quiz (20)
1Which statement about a magnet is correct?
- AA A magnet attracts a gold rod.
- BB A magnet does not attract a plastic rod.
- CC A magnet never repels another magnet.
- DD A magnet sometimes repels an unmagnetised nickel rod.
2A student wishes to make a permanent magnet. She has an iron rod and a steel rod.
Which rod should she use to make the permanent magnet, and is this rod a hard magnetic material or a soft magnetic material?
- AA
- BB
- CC
- DD
3Two nickel bars are placed close to the N-pole of a bar magnet. The nickel bars become magnetised.
Which row in the table states the pole induced at P, the pole induced at Q, and the type of magnetic force between P and Q?
- AA
- BB
- CC
- DD
4A student wishes to make a permanent magnet. She has an iron rod and a steel rod.
Which rod should she use to make the permanent magnet, and is this rod a hard magnetic material or a soft magnetic material?
- AA
- BB
- CC
- DD
5Which statement about magnetism is correct?
- AA An unmagnetised iron bar becomes magnetised when it is placed near a magnet.
- BB An unmagnetised steel bar can be magnetised by passing a current through it.
- CC The direction of magnetic field lines is from an S-pole to an N-pole.
- DD The N-poles of two magnets attract each other.
6In which pair are both materials magnetic?
- AA aluminium and copper
- BB copper and iron
- CC iron and steel
- DD steel and aluminium
7The diagram shows the magnetic field around two bar magnets.
Which diagram below correctly shows the poles of the magnets?
- AA
- BB
- CC
- DD
8The diagram shows apparatus that can be used to make a magnet.
Which metal and which power supply are used to make a permanent magnet?
- AA metal = iron; power supply = 6 V a.c.
- BB metal = iron; power supply = 6 V a.c.
- CC metal = steel; power supply = 6 V a.c.
- DD metal = steel; power supply = 6 V d.c.
9A wire perpendicular to the page carries an electric current in a direction out of
the page. There are four compasses near the wire.
Which compass shows the direction of the magnetic field caused by the current?
- AA
- BB
- CC
- DD
10Which group contains only non-ferrous metals?
- AA aluminium, brass, iron
- BB brass, copper, lead
- CC copper, iron, steel
- DD copper, lead, steel
11An electromagnet with a soft-iron core is connected to a battery and an open
switch. The soft-iron core is just above some small soft-iron nails.
The switch is now closed, left closed for a few seconds, and then opened.
What do the soft-iron nails do as the switch is closed, and what do they do when the switch is then opened?
- AA
- BB
- CC
- DD
12Which action will demagnetise a magnetised piece of steel?
- AA Cool it in a freezer for several hours.
- BB Hit it repeatedly with a hammer.
- CC Put it in a coil carrying a direct current (d.c.).
- DD Put it near an unmagnetised piece of iron.
13A student investigates the force on a bar magnet placed near a current-carrying coil. She carries out three different experiments.
In experiment 1, the magnet is attracted to the coil.
Which row shows what happens in the other two experiments?
- AA
- BB
- CC
- DD
14Three cores of different metals, P, Q and R, are placed inside identical coils of wire. At least one of the metals is non-ferrous. The cores are held above some iron nails.
Which choice correctly identifies whether the core metals are ferrous or non-ferrous?
- AA ferrous = P; non-ferrous = Q and R
- BB ferrous = P and Q; non-ferrous = R
- CC ferrous = Q and R; non-ferrous = P
- DD ferrous = R; non-ferrous = P and Q
15Which choice correctly states whether each metal is ferrous or non-ferrous?
- AA
- BB
- CC
- DD
16Which procedure may be used to demagnetise a steel bar?
- AA cooling it in a freezer for several hours
- BB earthing it with a copper wire for several seconds
- CC removing it slowly from a coil carrying an alternating current (a.c.)
- DD rubbing it in one direction with a woollen cloth
17Which statement about a permanent bar magnet is correct?
- AA It is made from a soft magnetic material.
- BB It repels a non-magnetic material.
- CC Its field lines cross each other where the magnetic field is strong.
- DD Its N-pole repels the N-pole of another magnet.
18The diagram shows two magnets and two iron rods placed in a line.
Which magnetic poles are induced at the ends J and K of the iron rods?
- AA
- BB
- CC
- DD
19Two iron nails hang from a bar magnet.
Which diagram shows the magnetic poles induced in the nails?
- AA
- BB
- CC
- DD
20The ends of three metal rods are tested by holding end Q of rod 1 close to the others in turn.
The results are as follows.
End Q: attracts end R,
attracts end S,
attracts end T,
repels end U.
Which of the metal rods is a magnet?- AA rod 1 only
- BB rod 1 and rod 2
- CC rod 1 and rod 3
- DD rod 3 only
Informações
- Descrição
- Quiz for 0654 Coordinated Sciences on Magnetism
- Autor
- Jeffrey Piggott
- Idioma
- English
- Visualizações
- 3.619
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