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Physics module 3 > Physics module > Flashcards

Physics module Flashcards

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1
Q

What is the only way that electrical current will flow

A

If the circuit is complete

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2
Q

What is in a series circuit

A

Only one path for the current

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3
Q

What happens as more bulbs are added

A

Each becomes dimmer

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4
Q

What happens if one component fails

A

The whole circuit fails

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5
Q

What is in a parallel circuit

A

There is more that one path for the current to follow

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6
Q

What happens as more light bulbs are added

A

All remain bright

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7
Q

What happens when one component fails

A

The rest of the circuit continues

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8
Q

What are conductors

A

Conductors are substances which electric current can flow through easily

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9
Q

What are some examples of conductors.

A

Steel, copper brass

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10
Q

What are insulators

A

Substances which stop electric current flowing

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11
Q

What is some examples of instulatore

A

Plastic, wood rubber

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12
Q

What is electrical current

A

The movement for electric charge from negative to positive in a circuit

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13
Q

What symbol is electrical current given

A

I

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14
Q

What is electrical current measured in

A

Amperes or A

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15
Q

Voltage is…

A

The amount of energy given to each charged particle as it passes through the battery or power supply

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16
Q

What is voltage measured in

A

Volts

17
Q

What is an ammeter

A

It is an instrument used to measure electrical current

18
Q

An ammeter must connect in…?

A

series

19
Q

Voltage can be measured using

A

A voltmeter

20
Q

What is 2 facts about what’s in a parallel circuit

A
  • the sum of currents in parallel branches is equal to the current from the supply
  • the voltage across each component is the same
21
Q

What is to facts about what is in a series circuit

A
  • the current is the same in all positions
  • the sum of the voltage across components is the same
22
Q

What happens when more than one switch is connected in series

A

They all have to be closed and complete the circuit and allow the current to flow

23
Q

What happens when more than one switch in series is connected in parallel.

A

any one or both can be closed to complete the circuit and allow the current to flow

24
Q

What is electrical resistance

A

Is a measurement of how good an object is at reading a current to flow

25
Q

What symbol is electrical resistance given

A

R

26
Q

What is it measured in

A

Ohms -^- using an ometre

27
Q

As a resistors resistance increases…?

A

The current decreased

28
Q

The electrons in higher resistance…?

A

Find it harder to flow

29
Q

Insulators or objects with higher resistance…?

A

Try to stop the flow of electrons

30
Q

A greater resistanc…?

A

Leads to a greater current

Physics module 3 (3 decks)

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