Pages in this set

Page 1

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Circuit rules
+
R
1

R
2

R
3

I
The electric current is the same at
all points around a series circuit.
Component p.d's add up to equal
supply EMF.

Page 2

Preview of page 2
Circuit Rules
+
V
The potential difference is the same
across all components connected in
parallel.

Page 3

Preview of page 3
Circuit Rules
+
I
I
1


I
I
2

I
3

Total current drawn from the power
supply equals the sum of the
individual component currents.

Page 4

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Page 5

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Resistor combinations
In series: R
total

= R
1

+ R
2

+ R
3

+...
Current is the same through all
components connected in series

Page 6

Preview of page 6
Resistor combinations
In parallel: 1/R
total

= 1/R
1

+ 1/R
2

+...
Potential difference is the same
across all components connected in
parallel. (Shortcut ­ if two resistors
of equal value are connected in
parallel, the effective resistance is
HALF the value of ONE of them)

Page 7

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Page 8

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Potential Divider
V
2
V
1

R
1

R
2

V
2

= V
1

x R

Page 9

Preview of page 9
2

/(R
1

+ R
2

) R
1

resistor, or R
2

may thermistor be a variable
or L.D.R

Page 10

Preview of page 10
Electromotive Force
Electromotive Force is the term
used for the electrical potential
difference across any device which
acts as a SOURCE of electrical
energy. This includes batteries,
solar cells, generators etc.

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Pages in this set

Page 1

Preview of page 1
Circuit rules
+
R
1

R
2

R
3

I
The electric current is the same at
all points around a series circuit.
Component p.d's add up to equal
supply EMF.

Page 2

Preview of page 2
Circuit Rules
+
V
The potential difference is the same
across all components connected in
parallel.

Page 3

Preview of page 3
Circuit Rules
+
I
I
1


I
I
2

I
3

Total current drawn from the power
supply equals the sum of the
individual component currents.

Page 4

Preview of page 4

Page 5

Preview of page 5
Resistor combinations
In series: R
total

= R
1

+ R
2

+ R
3

+...
Current is the same through all
components connected in series

Page 6

Preview of page 6
Resistor combinations
In parallel: 1/R
total

= 1/R
1

+ 1/R
2

+...
Potential difference is the same
across all components connected in
parallel. (Shortcut ­ if two resistors
of equal value are connected in
parallel, the effective resistance is
HALF the value of ONE of them)

Page 7

Preview of page 7

Page 8

Preview of page 8
Potential Divider
V
2
V
1

R
1

R
2

V
2

= V
1

x R

Page 9

Preview of page 9
2

/(R
1

+ R
2

) R
1

resistor, or R
2

may thermistor be a variable
or L.D.R

Page 10

Preview of page 10
Electromotive Force
Electromotive Force is the term
used for the electrical potential
difference across any device which
acts as a SOURCE of electrical
energy. This includes batteries,
solar cells, generators etc.

Comments

No comments have yet been made