Electricity and Magnetism
Alternating current - an electric current that reverses its direction many times a second at regular intervals, typically used in power
supplies.
Ampere - a unit of electric current equal to a flow of one coulomb per second.
Diode- a semiconductor device with two terminals, typically allowing the flow of current in one direction only.
Direct Current -an electric current flowing in one direction only.
Electric Power -Electric power is the rate at which electric energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second.
Electric Resistance - Resistance is an electrical quantity that measures how the device or material reduces the electric current flow through it. The resistance is measured in units of ohms
Ohm - the SI unit of electrical resistance, expressing the resistance in a circuit transmitting a current of one ampere when subjected to a potential difference of one volt.
Ohm's Law - The resistor's current I in amps (A) is equal to the resistor's voltage VR=V in volts (V) divided by the resistance R in ohms (Ω): V is the voltage drop of the resistor, measured in Volts (V)
Potential Difference - the difference of electrical potential between two points.
Voltage Source - is a two terminal device which can maintain a fixed voltage. An ideal voltage source can maintain the fixed voltage independent of the load resistance or the output current.
supplies.
Ampere - a unit of electric current equal to a flow of one coulomb per second.
Diode- a semiconductor device with two terminals, typically allowing the flow of current in one direction only.
Direct Current -an electric current flowing in one direction only.
Electric Power -Electric power is the rate at which electric energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second.
Electric Resistance - Resistance is an electrical quantity that measures how the device or material reduces the electric current flow through it. The resistance is measured in units of ohms
Ohm - the SI unit of electrical resistance, expressing the resistance in a circuit transmitting a current of one ampere when subjected to a potential difference of one volt.
Ohm's Law - The resistor's current I in amps (A) is equal to the resistor's voltage VR=V in volts (V) divided by the resistance R in ohms (Ω): V is the voltage drop of the resistor, measured in Volts (V)
Potential Difference - the difference of electrical potential between two points.
Voltage Source - is a two terminal device which can maintain a fixed voltage. An ideal voltage source can maintain the fixed voltage independent of the load resistance or the output current.