PHYSICS P2 Flashcards

(15 cards)

1
Q

current definition

A

a flow of electrical charge

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2
Q

potential difference definition

A

the driving force that pushes charge

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3
Q

resistance defintition

A

anything that slows the flow of charge down.

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4
Q

potential difference is measured in

A

Volts (V)

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5
Q

resistance is measured in

A

Ohms

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6
Q

current is measured in

A

Amperes (A)

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7
Q

the greater the resistance …

A

the smaller the current that flows ( for a given potential difference)

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8
Q

Q=It

A

charge flow (C) = Current (A) x Time (s)

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9
Q

V=IR

A

potential difference = current x resistance
(V) = (A). x (ohms)

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10
Q

mains supply =

A

AC

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11
Q

battery supply =

A

DC

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12
Q

the power of an appliance is

A

the energy that it transfers per second

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13
Q

earth wire

A

green and yellow

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14
Q

live wire

A

brown

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15
Q
A
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