Ohm'S Law Pie Chart Page 2
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1
2OHM’S LAW
OHM’S LAW
In the preceding example, we know the following values:
In the preceding example, we know the following values:
I = amps = 10
R = ohms = 12Ω
I = amps = 10
R = ohms = 12Ω
E = volts = 120
P = watts = 1200
E = volts = 120
P = watts = 1200
We can now see how the twelve formulas in the Ohm’s Law chart
We can now see how the twelve formulas in the Ohm’s Law chart
can be applied.
can be applied.
WATTS
P
1200
AMPS = –––––––
I =
––– = ––––– =
100 = 10A
OHMS
R
12
WATTS
P
1200
AMPS = –––––––
I =
––– = ––––– = 10A
VOLTS
E
120
VOLTS
E
120
AMPS = –––––––
I =
––– = ––––
= 10A
OHMS
R
12
2
2
2
VOLTS
E
120
14,400
WATTS = ––––––
P = ––– = –––– = –––––– = 1200W
OHMS
R
12
12
WATTS = VOLTS x AMPS
P = E x I = 120 x 10 = 1200W
2
2
WATTS = AMPS
x OHMS
P = I
x R = 100 x 12 = 1200W
VOLTS =
WATTS x OHMS
E =
P x R =
1200 x 12 = 14,400 = 120V
VOLTS = AMPS x OHMS
E = I x R = 10 x 12 = 120V
WATTS
P
1200
VOLTS = ––––––
E = –– = –––– = 120V
AMPS
I
10
2
2
2
VOLTS
E
120
14,400
OHMS = –––––––
R = –– = ––––– = –––––– = 12Ω
WATTS
P
1,200
1,200
WATTS
P
1200
OHMS = –––––––
R = –– = ––––– = 12Ω
AMPS
2
I
2
100
VOLTS
E
120
OHMS = –––––––
R = –– = ––––– = 12Ω
AMPS
I
10
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