Electrical Circuit Current & Voltage Theory Part-1
Basic Electrical Theory Ohm’s Law, Current, Circuits & More
Symbolic Option :
E =VOLTS ~or~ (V = VOLTS)
P =WATTS ~or~ (W = WATTS)
R = OHMS ~or~ (R = RESISTANCE)
I =AMPERES ~or~ (A = AMPERES)
HP = HORSEPOWER
PF = POWER FACTOR
kW = KILOWATTS
kWh = KILOWATT HOUR
VA = VOLT-AMPERES
kVA = KILOVOLT-AMPERES
C = CAPACITANCE
EFF = EFFICIENCY (expressed as a decimal)
DIRECT CURRENT (DC)
AMPS= |
WATTS÷VOLTS |
I = P ÷ E |
A = W ÷ V |
WATTS= |
VOLTS x AMPS |
P = E x I |
W = V x A |
VOLTS= |
WATTS ÷ AMPS |
E = P ÷ I |
V = W ÷ A |
HORSEPOWER= |
(V x A x EFF)÷746 |
|
|
EFFICIENCY= |
(746 x HP)÷(V x A) |
|
|
AC SINGLE PHASE ~ 1ø
AMPS= |
WATTS÷(VOLTS x PF) |
I=P÷(E x PF) |
A=W÷(V x PF) |
WATTS= |
VOLTS x AMPS x PF |
P=E x I x PF |
W=V x A x PF |
VOLTS= |
WATTS÷AMPS |
E=P÷I |
V=W÷A |
VOLT-AMPS= |
VOLTS x AMPS |
VA=E x I |
VA=V x A |
HORSEPOWER= |
(V x A x EFF x PF)÷746 |
|
|
POWERFACTOR= |
INPUT WATTS÷(V x A) |
|
|
EFFICIENCY= |
(746 x HP)÷(V x A x PF) |
|
|
AC THREE PHASE ~ 3ø
AMPS= |
WATTS÷(1.732 x VOLTS x PF) |
I = P÷(1.732 x E x PF) |
WATTS= |
1.732 x VOLTS x AMPS x PF |
P = 1.732 x E x I x PF |
VOLTS= |
WATTS÷AMPS |
E=P÷I |
VOLT-AMPS= |
1.732 x VOLTS x AMPS |
VA=1.732 x E x I |
HORSEPOWER= |
(1.732 x V x A x EFF x PF)÷746 |
|
POWERFACTOR= |
INPUT WATTS÷(1.732 x V x A) |
|
EFFICIENCY= |
(746 x HP)÷(1.732 x V x A x PF) |
|
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