Download OHMS LAW

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It is the push or pressure behind
current flow through a circuit,
and is measured in (V) volts.

Current refers to the
quantity/volume of electrical
flow. Measured in Amps (A)

Resistance to the flow of the
current. Measured in Ohms
1. Assuming the resistance does not
change:
As voltage increases, current increases.
as voltage decreases, current decreases.
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2. Assuming the voltage does not change:
As resistance increases, current decreases.
As resistance decreases, current increases.
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Studied the relationship between voltage,
current, and resistance.
Ohm’s Law explains the
relationship between voltage (V
or E), current (I) and resistance
(R)
 Used by electricians, automotive
technicians, stereo installers

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V = IxR
I=V
R
R=V
I
A circuit has a current
of 12 amps and a resistance
Of 5 Ohms.

What is the voltage?
12 x5 = 60 V

Battery voltage is 12V
Resistance 2 Ohm
What is the current?

12 / 2 = 6 amps

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Voltage is 12V
Current is 4 Amps
What is the resistance?

12 / 4 = 3 ohms
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What is Voltage?
 What is Current?
 What is Resistance?

http://www.youtube.com/watch?v=nj7ewZmG3
eo&feature=related
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Series circuit :
One pathway for current to flow.
Example: Old Christmas lights

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More then one path way for current to
flow.
Used in most electrical vehicle circuits.
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