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Year 10 Physics > Y10Magnets > Flashcards

Y10Magnets Flashcards

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1
Q

Any material that a magnet would attract is an example of a …?… material

A

magnetic

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2
Q

A ..?.. can be made only from a magnetic material

A

magnet

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3
Q

Iron and …?… are examples of magnetic materials

A

steel

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4
Q

The places on a magnet where the magnetic force is concentrated are called the ..?.. of the magnet

A

poles

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5
Q

Like poles …?…

A

repel

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6
Q

Unlike poles …?…

A

attract

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7
Q

The region around a magnet, where it exerts a magnetic force, is called a magnetic …?…

A

field

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8
Q

The …?… on magnetic field lines always point from North to South

A

arrows

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9
Q

If two …?… poles are placed next to each other, the field lines will flow directly from one to the other

A

unlike

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10
Q

If two …?… poles are placed next to each other, there will be a neutral point between them

A

like

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11
Q

A neutral point is a point where the total magnetic force is …?

A

zero

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12
Q

A coil of wire that you can pass electric current through is called a …?

A

solenoid

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13
Q

A solenoid with a current flowing through it behaves like a weak …?

A

magnet

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14
Q

The magnetic field pattern around a solenoid looks the same as the one around a …?

A

bar magnet

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15
Q

If you place an iron core down the middle of a solenoid, the strength of the electromagnet …?

A

increases

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16
Q

If you reduce the number of turns on the coil in an electromagnet, the strength of the electromagnet …?

A

decreases

17
Q

You can increase the strength of an electromagnet by …?… the current flowing through it.

A

increasing

18
Q

One advantage of an electromagnet, which makes it useful as a lifting magnet, is that it can be …????

A

switched on and off

19
Q

Electromagnets can be made much …?… than permanent magnets

A

stronger

20
Q

A relay is an electrically controlled …?

A

switch

21
Q

A relay can use a small current to control a dangerously …?… current

A

large

22
Q

When an electric bell is switched on, current flows through its …?

A

electromagnet

23
Q

The electromagnet in a bell attracts the …??… armature

A

soft iron

24
Q

As the hammer moves to hit the gong in an electric bell, it switches off the electromagnet by …?… contacts in the electromagnet circuit.

A

separating

25
Q

After hitting the gong, the hammer in an electric bell springs back, closing the gap between the contacts and allowing …?… to flow again

A

current

26
Q

The shape of the magnetic field pattern for a bar magnet

A

Year 10 Physics (3 decks)

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