8.1-8.4 Charge and Current Quizlet Cards Flashcards
What is a charge carrier?
A charged particle capable of transferring electric current.
What do we mean when we say charge is quantised?
It can only take certain values (always ne)
If n electrons are removed from a neutral object what is its charge?
+ne
What is an electrolyte?
A liquid containing charged ions.
What is a metallic conductor?
A material comprising a lattice of positive ions and delocalised electrons that carry electrical current
Which direction does conventional current flow?
From positive to negative.
Which direction do electrons flow in a circuit?
From negative to positive.
What is an ion?
A non-neutral atom or molecule.
What is a cation?
A positively charged ion
What is an anion?
A negatively charged ion.
What is an anode?
A positive electrode.
What is a cathode?
A negative electrode.
How is an ammeter connected?
In series
What is the resistance of an ideal ammeter?
Zero.
State Kirchoff’s first law.
At any point in a circuit the sum of the currents entering that point is equal to sum of the currents leaving.
