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1

RATE what does it mean?

per unit time

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2

unit for resistance

ohms

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3

POTENTIAL DIFFERENCE what is it?

measure of the electrical work done (J) for every coulomb of charge that flows through a component

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4

what is POTENTIAL DIFFERENCE measured in?

(v) volts

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5

E ?

energy (J)

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6

Q ?

charge (coloumbs)

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7

V ?

(volts)

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8

ohms law ?

current through a resistor is directly proportional to the potential difference across the resistor

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9

formula for PD ?

v = IR

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10

V = IR ?

potential difference = current x resistance

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11

if the charge increases by 2 how much will current increase by ?

2

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12

in a voltmeter how is PD shared ?

it is shared equally

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13

PD in a parallel circuit?

across each branch the pd is the same and is equal to the cell voltage

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14

current in a parallel circuit?

current splits at a junction means that the sum of all the current through each branch equals the total current.

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15

PD in a series circuit?

the potential difference splits between components

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16

current in a series circuit?

the current is the same through each component

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17

what do use to measure current?

ammeter

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18

what do you use to measure potential difference?

voltmeter

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19

what does LDR stand for?

light dependant resistor

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20

rule for light intensity in LDR

as the light intensity increases the resistance of the LDR decreases.

as the light intensity decreaes the resistance of the LDR increases.

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21

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