Electrical Circuits And Magnetism Flashcards Preview

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Flashcards in Electrical Circuits And Magnetism Deck (47):
1

Nylon creates static, what would happen if you wear it at a petrol station?

Catch fire

2

What is the symbol for a wire?

Straight line

3

What does a series circuit have?

Has all the components joined in a loop

4

What are parallel circuits like?

The rungs of a ladder

5

What do parallel circuits let you do?

Switch components on and off independently. This is house lights in a house work.

6

What units are used for voltage?

Volts

7

What unit is used for current?

Amps (A)

8

What is current?

The flow of electrons

9

What determines how fast the flow of electrons

The energy from the battery

10

How can you measure the amount of electric currents in a circuit?

Ammeter

11

How is ammeter connected

In series

12

What does voltage mean?

How hard batteries push the electrons around a circuit

13

How is voltage measured?

With a voltmeter

14

How are voltmeters attached?

In parallel

15

How are components connected in a series circuit

In one loop

16

How do you use a voltmeter

Attach it across the components (in parallel)

17

What do the voltages in a series circuit add up to?

The battery voltage

18

In an experiment, the higher the number of bulbs means...

The higher the resistance

19

The higher the resistance ...

The lower the current

20

What can a resistor do?

Change what happens to the current in a circuit

21

What is resistance measured in?

Ohms

22

What happens as resistance increases?

The current decreases

23

What is a magnet?

A material or object that produces a magnetic field

24

Can you see a magnetic field?

No, it is invisible

25

What do magnets have?

A north and south pole

26

What can magnetism do?

Attract magnetic objects or push them away

27

How are electromagnets created

By an electric current running through a surrounding coil

28

Give an example use of an electromagnetic

The generation of electricity in hydroelectric dams

29

What three things will the strength of the electromagnet depend on?

Number of turns on the coil of wire around the core
Strength of the current applied
The material of the coil

30

What should the circuit for a simple electromagnet always have?

A switch to prevent it overheating

31

Magnets can be found in many areas of everyday life. Name five.

Washing machines
Generators
Electric motors
Loudspeakers
Computer hard drives
Magnetic audio
Videotapes

32

Name three magnetic metals

Iron
Nickel
Cobalt

33

Name the famous scientists...

Alessandro

Volta

34

Name the famous scientists...

Andre-Marie

Ampere

35

Name the famous scientists...

Georg

Ohm

36

Can you see a magnetic field?

No, it is invisible

37

What do magnets have?

A north and south pole

38

What can magnetism do?

Attract magnetic objects or push them away

39

How are electromagnets created

By an electric current running through a surrounding coil

40

Give an example use of an electromagnetic

The generation of electricity in hydroelectric dams

41

What three things will the strength of the electromagnet depend on?

Number of turns on the coil of wire around the core
Strength of the current applied
The material of the coil

42

What should the circuit for a simple electromagnet always have?

A switch to prevent it overheating

43

Magnets can be found in many areas of everyday life. Name five.

Washing machines
Generators
Electric motors
Loudspeakers
Computer hard drives
Magnetic audio
Videotapes

44

Name three magnetic metals

Iron
Nickel
Cobalt

45

Name the famous scientists...

Alessandro

Volta

46

Name the famous scientists...

Andre-Marie

Ampere

47

Name the famous scientists...

Georg

Ohm