Units
The unit of resistance
What is Ohm (Ω)?
The time rate of change of charge in a circuit
What is current?
Device characterized by the current through the element and/or voltage across it
What is a circuit element?
This law states that the sum of the voltages around a closed loop is always equal to 0.
What is Kirchhoff's voltage law?
This circuit element can only absorb or dissipate power.
The unit of potential difference
What is Volt (V)?
Time rate of energy delivered or absorbed by a circuit element
What is power?
The connection between two or more branches of a circuit.
What is a node?
This law states that the sum of the currents coming into and out of a node is always 0.
What is Kirchhoff's current law?
This circuit element provides power to a circuit.
What is an active circuit element?
The unit of current
What is Ampere (A)?
Reduces the flow of electric current in a circuite
What is resistance?
A closed path in the circuit where one returns to the starting node without crossing any intermediate node twice.
What is a loop?
This states that the voltage drop across a circuit element is proportional to the current in the circuit and the resistance of the circuit element.
What is Ohm's law?
What is V = IR ?
Assumes current flows into the positive terminals of passive circuit elements.
What is the passive sign convention?
The unit of power
What is Watt (W)?
The difference in energy (or work) required to move a unit charge between two points
What is potential difference/voltage?
A closed path in the circuit that does not contain any other closed paths.
What is an independent loop?
This basic equation states that the power absorbed or dissipated by a circuit element is proportional to the current running through it and the potential difference (or voltage) across it.
What is P = IV ? What is the power equation?
Assumes that current flows out of positive terminal of active elements and into their negative terminal (in opposition to real life, where current is generated by the flow of electrons)
What is conventional current?
The unit of current
What is Coulomb (C)?
An electrical property of atomic particles, namely protons, electrons and neutrons.
What is charge?
The path of the circuit between two nodes that can deliver or absorb energy, i.e. that passes through a circuit element.
What is a branch?
This equation states that for a given set of resistors in series, the drop of voltage across individual resistors is proportional to the ratio of the individual resistor : the equivalent resistance, and the total drop of voltage across all resistors.
What is the voltage divider?
When a "chain" of circuit elements (such as resistors) share a single/common current.
What is "in series"?