§ 1-2 Ohm's law
Ohm's law states that voltage across many types of
conducting materials is directly proportional to the
current flowing through the material,?
i
0
Ri??
The resistor is a passive element that cannot deliver
power or store energy.
)]S(cet anc on du cG[
G/iGip
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??? 22??
i
G
?? ?
?? ?
R
RRiip /22 ?? ???
i
)r e s i s t o rl i n e a r)((cet a nr e s i sR ???
iRor
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The current through and voltage across a resistor
must both vary with time in the same manner.
p
i
?
p
t
0
T
We define a "short circuit" as a resistance of zero ohms.
We define a "open circuit" as an infinite resistance.
tVtRIf 1 0 0s i n2)(,10,?? ?
Wtipa n d
tARi
h a v ewe
2)100( s i n4.0
100s i n2.0/
??
??
?
?
Ohm's law states that voltage across many types of
conducting materials is directly proportional to the
current flowing through the material,?
i
0
Ri??
The resistor is a passive element that cannot deliver
power or store energy.
)]S(cet anc on du cG[
G/iGip
??
??? 22??
i
G
?? ?
?? ?
R
RRiip /22 ?? ???
i
)r e s i s t o rl i n e a r)((cet a nr e s i sR ???
iRor
??
The current through and voltage across a resistor
must both vary with time in the same manner.
p
i
?
p
t
0
T
We define a "short circuit" as a resistance of zero ohms.
We define a "open circuit" as an infinite resistance.
tVtRIf 1 0 0s i n2)(,10,?? ?
Wtipa n d
tARi
h a v ewe
2)100( s i n4.0
100s i n2.0/
??
??
?
?