Electric Current

Question	Answer
Define Current.	The net flow of charged particles.
Why does current flow through a metal?	Due to the movement of electrons.
Why does a current flow through an electrolyte?	Due to the movement of ions.
Define Conventional Current.	A model used to show the movement of electrons in a circuit, from positive to negative.
Define Electron Flow.	The movement of electrons around a circuit from negative to positive.
Define Electric Charge.	One columb is equal to the flow of one ampare in one second. 1c = 1A x 1s.
What is an ammeter?	An instrument used to measure electrical current in a circuit.
What is Elementry Charge?	The charge of an electron. 1.6x10^-19 C
What is Kirchoff's first law?	The sum of the currents entering a junction is equal to the sum of currents exiting the junction. This is the conservation of Charge.
Define Mean Drift Velocity.	Average speed of charged particles along a length of a conductor.
Define a conductor.	A material with a high number of conduction electrons and a low resistance.
Define a semiconductor.	A material that has a low number of conduction electrons and a high resistance.
Define an insulator.	A material with a number density nearing 0 and a very high resistance.
Define Potential Difference.	Energy transferred per unit charge of electrical energy into another form of energy. 1V = 1I x 1R

Resource summary

	Created by LotzaLemmon over 10 years ago