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Physical Sciences > Electricity > Flashcards

Electricity Flashcards

1
Q

cell

A

is a source of electrical potential energy

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2
Q

cell definition

A

converts chemical potential energy to electrical potential energy

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3
Q

work is done…

A

whenever energy is transferred, whenever energy is transferred work is done

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4
Q

1 Volt

A

1 Joule

1 Coulomb

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5
Q

current

A

the rate of flow or charge

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6
Q

resistance/ electrical resistance

A

the opposition to the flow of charge that a conductor offers

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7
Q

factors that effect resistance

A
  • length of wire
  • thickness of wire
  • temperature of wire
  • type of material
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8
Q

length of wire

A

longer the wire the more resistance

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9
Q

thickness

A

the thicker the wire the less resistance

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10
Q

temperature

A

higher the temperature the more resistance

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11
Q

type of material

A

depends on the number of delocalised electrons

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12
Q

delocalised electrons

A

free electrons, allow the ability for electricity to flow

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13
Q

conventional current

A

the flow of positive charge from positive terminals to negative terminals

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14
Q

electron current

A

the flow of negative charge from negative terminals to positive terminals

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15
Q

Ohms law

A

R = V/I

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16
Q

series

A
  • only one path for the current to flow
17
Q

the more resistors in series

A

the bigger the total resistance

18
Q

voltage

A

energy transferred per unit charge

19
Q

give a rule for current in series

A

current is the same at all points in a series circuit (except voltmeter)

20
Q

EMF

A

The total energy that the cell/battery is able to give to the coulomb of charge

21
Q

parallel circuits

A
  • current splits

- Voltage is the same across all parallel resistors

22
Q

resisters in parallel

A

the more resistors you put in the less resistance you have

Physical Sciences (19 decks)

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