click below
click below
Normal Size Small Size show me how
Electrical vocab
Vocabulary
Question | Answer |
---|---|
Amp | a unit of electrical current equal to a flow of one coulomb per second. |
Voltage | an electromotive force or potential difference expressed in volts. |
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. |
Resistor | a device having a designed resistance to the passage of an electric current. |
Parallel circuit | a closed circuit in which the current divides into two or more paths before recombining to complete the circuit. |
Series circuit | a closed circuit in which the current follows one path. |
Capacitor | a passive two-terminal electronic component that stores electrical energy in an electric field. |
Ohm's law | the current through a conductor between two points is directly proportional to the voltage across the two points. |
AC current | an electric current which periodically reverses direction. |
DC current | an electrical current that flows in one direction. |
Watt | he SI unit of power, equivalent to one joule per second, corresponding to the power in an electric circuit in which the potential difference is one volt and the current one ampere. |
Circuit | a system of electrical conductors and components forming a complete and closed path. |
Electrical ground | an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the earth. |
Conductor | a material or device that conducts or transmits heat, electricity, or sound, especially when regarded in terms of its capacity to do this. |
Insulator | a substance which does not readily allow the passage of heat, sound, or electricity. |
Joules | the SI unit of work or energy, equal to the work done by a force of one newton when its point of application moves one meter in the direction of action of the force, equivalent to one 3600th of a watt-hour. |
Coulomb | the SI unit of electric charge, equal to the quantity of electricity conveyed in one second by a current of one ampere. |
Resistance | the opposition that a substance offers to the flow of electric current. |
Transistor | a semiconductor device with three connections, capable of amplification in addition to rectification. |
Hertz | the SI unit of frequency, equal to one cycle per second. |