EGR Electrical Theory

The SI unit of charge defined in terms of the force exerted between unit charges

Coulomb

The continuous movement of electrons in a direction

Electric Current

At constant temperature, the current I in a conductor is directly proportional to the potential difference between its ends, E

Ohm’s Law

The reciprocal of resistance

Conductance

When resistors are attached end to end

Series

When several resistors are connected between the same two

Parallel

The algebraic sum of all the currents coming into a node in a network must be zero

Kirchhoff’s Current Law

The algebraic sum of the voltages (potential drops) around any closed loop in a network equals zero

Kirchhoff’s Voltage Law

A specific point or location within a circuit where two or more components are connected

Node

A loop that does not contain any other loops within itself

Mesh