Magnetism and Static Electricity

Which group contains only non-ferrous metals

• aluminium, brass, iron

• copper, steel, nickel

• copper, tin, brass

• iron, titanium, zinc

Which statement about a magnet is correct

• A magnet attracts a gold rod

• A magnet does not attract a plastic rod

• A magnet never repels another magnet

• A magnet is sometimes attracted to nickel

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Diagram 1 shows two, thin, uncharged strips of plastic.

Diagram 2 shows the same strips after they have been rubbed with a dry cloth.

Which answer best describes the charges on the strips after rubbing and the force between the strips after rubbing.

• Opposite charge and attractive force.

• Opposite charge and repulsive force.

• The same charge and attractive force.

• The same charge and repulsive force.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which statement about magnetism is correct.

• An unmagnetised iron bar will become magnetised when it is placed near a magnet

• A steel bar will become permanently magnestised when a current is passed through it.

• The direction of magnetic field lines is from the S pole to the N pole

• The N poles of a magnet attract each other.

Tags

NGSS.MS-PS2-5

Two plastic rods, rod P and rod Q, are negatively charged. Rod P hangs freely on a insulated thread. The end of rod Q is brought close to the end X of rod P and then to end Y of rod P. Which statement best describes what happens to the end of the rods as rod Q is brought close to rod P.

• End X will be attracted to rod rod Q and end Y will be attracted to rod Q

• End X will be be repulsed by rod Q and end Y will be attracted to rod Q

• End X will be attracted to rod Q and end Y will be repulsed by rod Q

• End X will be repulsed by rod Q and end Y will be repulsed by rod Q

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

The diagram shows the apparatus that can be used to make a magnet.

Which metal and power supply are used to make a permanent magnet?

• iron and 6 volts alternating current

• steel and 6 volts alternating current

• iron and 6 volts direct current

• steel and 6 volts direct current

Tags

NGSS.MS-ETS1-1

A teacher wishes to show the production of electrostatic charges. A plastic rod, a copper rod, a glass rod and a steel rod are available.

The teacher chooses a rod, holds the rod and rubs it with a dry cotton cloth to produce the charges. Which two types of rods should he choose?

• copper and glass

• glass and plastic

• plastic and steel

• glass and steel

A rare and expensive steel watch becomes magnetised.

The owner wishes to use the watch again and to do so it must be demagnetised.

What is the best method to do this?

• Heat it until it glows red hot.

• Pass a direct current through it.

• Place it is a solenoid which carries an alternating current and then slowly remove it.

• Put it in a plastic bag and then submerge it is hot water for several hours.

Which test could be used to find the North pole of a magnet?

• Put it near a compass needle?

• Put it near a ferrous metal

• Put it near a non-ferrous metal

• Put it near a steel spoon

Two similar balloons hang side by side on insulated threads a short distance apart. They are both rubbed with the same dry cloth and become charged.

Which diagram shows how the balloons hang after charging?

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Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-3

NGSS.MS-PS2-5