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Physics > S3 - Physics Test (2) > Flashcards

S3 - Physics Test (2) Flashcards

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1
Q

Name each charge of the following:
- Electron
- Proton
- Neutron

A
  • Negative Charge
  • Positive Charge
  • No Charge
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2
Q

Where are each of the following found in an atom:

  • Electron
  • Proton
  • Neutron
A

Protons & Neutrons: Nucleus

Electron: Orbiting the Nucleus

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3
Q

What will happen when a charged particle enters another’s field?

A

They will experience a force acting on them causing them to repel

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4
Q

Name the circuit symbol

A

A switch

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5
Q

Name the circuit symbol

A

A cell

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6
Q

Name the circuit symbol

A

A battery

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7
Q

Name the circuit symbol

A

A lamp

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8
Q

Name the circuit symbol

A

A voltmeter

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9
Q

Name the circuit symbol

A

An ammeter

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10
Q

Name the circuit symbol

A

A resistor

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11
Q

Name the circuit symbol

A

A variable resistor

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12
Q

Name the circuit symbol

A

A motor

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13
Q

Name the circuit symbol

A

An ohmmeter

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14
Q

Name the circuit symbol

A

A fuse

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15
Q

What is it called when electrical charges are moving?

A

An electrical current

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16
Q

What is a current?

A

A flow of charge in an electrical circuit

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17
Q

What is resistance a measure of?

A

The opposition a circuit component has to the current

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18
Q

Name the circuit symbol

A

A thermistor

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19
Q

What are ohmmeters used to measure?

A

The resistance

20
Q

What is resistance measured in?

A

Ohms

21
Q

How do we use an ohmmeter to measure the resistance?

A

We can disconnect a component from the circuit and connect an ohmmeter to it before reconnecting it again.

22
Q

The resistance of a thermistor changes with…

A

Temperature

23
Q

What do lamps and heaters have in common?

A

They convert electrical energy into other forms of energy.

24
Q

What does a resistor covert electricity into?

A

Heat

25
Q

Where might you find a variable resistor in everyday appliances?

A
  • Dimmer Switch
  • Heaters
  • Hair Straighteners
26
Q

What happens to the current of a circuit if there is an increase in resistance?

A

The current decreases

27
Q

What triangle may help find the voltage / current / resistance

A

V
I R

28
Q

What triangle may help find the Power / Energy / Time?

A

E
P t

29
Q

When there is an electrical current flowing through an electrical component there is…

A

an energy transformation

30
Q

What is power?

A

The energy transformed each second

31
Q

How can we calculate the efficiency of an electrical appliance?

A

%Eff = Po/Pi x 100

32
Q

How do opposite charges react with one another?

How do similar charges react with one another?

A

They attract

They repel

33
Q

What is a battery / cell?

A

A source of electricity

34
Q

What is a current?

A

A flow of charge

35
Q

What do ammeters measure?

A

The current of a circuit

36
Q

Does the current change throughout a circuit?

A

No, however this is not the case for a parallel circuit

37
Q

What do voltmeters measure?

A

The voltage

38
Q

The sum of the voltage across components in a series circuit is equal to the voltage of the supply.

True or False?

A

True

39
Q

What is energy measure in?

A

Joules

40
Q

What is power measured in?

A

Watts

41
Q

What do conductors allow to move freely?

A

Electrons

42
Q

The movement of electrons through an electrical circuit is called a…

A

Current

43
Q

How do you measure voltage?

A

By connecting a voltmeter in parallel to a circuit

44
Q

What happens to the current in a parallel circuit?

A

It’s splits into different branches and combines again before going back into the supply

45
Q

What does it mean if a question asks you to find the ‘potential difference’?

A

Find the voltage

46
Q

What way does a current flow around a circuit?

A

From the Negative end of an energy supply to the positive

Physics (9 decks)

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