Electric Voltage

Electric voltage V or E, also known as electric potential difference, is the measure of the electric potential energy per unit charge that is required to move a charge from one point to another in an electric field.  A unit of electrical pressure.  One volt is the amount of pressure that will cause one ampere of current in one ohm of resistance.

Tags: Cathodic Protection Electrical Voltage

Electric Voltage Index

• Electric Voltage Formula 1
• Electric Voltage Formula 2
• Electric Voltage Formula 3
• Voltage in Series Formula
• Voltage in Parallel Formula

In simple terms, voltage is the force that drives the electric current through a conductor.  It is similar to the pressure that drives water through a pipe.  The greater the voltage, the more electric charge will flow through a circuit.  Voltage can be calculated using Ohm's Law, which relates voltage, current, and resistance in an electrical circuit.

 

Electric Voltage formula
\( V = I \; R \)     (Electric Voltage) \( I =  V \;/\; R \) \( R =  V \;/\; I \)
Symbol	English	Metric
\( V \) = voltage	\(V\)	\(kg-m^2 \;/\; s^3-A\)
\( I \) = current	\(I\)	\(C \;/\; s\)
\( R \) = resistance	\(\Omega\)	\(kg-m^2 \;/\; s^3-A^2\)

 

Electric Voltage formula
\( V =  P \;/\; I \)     (Electric Voltage) \( P =  V \; I  \) \( I =  P \;/\; V \)
Symbol	English	Metric
\( V \) = voltage	\(V\)	\(kg-m^2 \;/\; s^3-A\)
\( I \) = current	\(I\)	\(C \;/\; s\)
\( P \) = power	\(P\)	\(kg-m^2 \;/\; s^3\)

 

Electric Voltage formula
\( V = \sqrt{ P \; R } \)     (Electric Voltage) \( P =   V^2 \;/\; R \) \( R =  V^2 \;/\; P \)
Symbol	English	Metric
\( V \) = voltage	\(V\)	\(kg-m^2 \;/\; s^3-A\)
\( P \) = power	\(P\)	\(kg-m^2 \;/\; s^3\)
\( R \) = resistance	\(\Omega\)	\(kg-m^2 \;/\; s^3-A^2\)

    

Voltage in Series formula  The total voltage of several voltage sources or drops in series.
\( V_t  =  V_1 + V_2 + V_3 +\; ...    \)
Symbol	English	Metric
\( V_t \) = voltage total source or drop	\(V\)	\(kg-m^2\;/\;s^3-A\)
\( V_1, V_2, V_3 \) = voltage source or drop	\(V\)	\(kg-m^2\;/\;s^3-A\)

   

Voltage in Parallel formula  The voltage sources or drops in parallel having equal voltages.
\( V_t  =  V_1  = V_2 = V_3 =\; ...    \)
Symbol	English	Metric
\( V_t \) = voltage total source or drop	\(V\)	\(kg-m^2\;/\;s^3-A\)
\( V_1, V_2, V_3 \) = voltage source or drop	\(V\)	\(kg-m^2\;/\;s^3-A\)