2.1 Current, potential difference and resistance Flashcards
1
Q
Define potential difference.
A
the difference of electrical potential between two points.
2
Q
State the name of the particle that carries the electrical charge round a circuitand to describe how to make an object charged.
A
electrons
3
Q
Define an electric current.
A
the flow of charge
4
Q
Describe and explain why an electric current will flow in a circuit.
A
because of the movement of electrons
5
Q
describe how marbles moving down a ramp with masses placed on the ramp to represent atom
A
6
Q
calculate the charge flow
A
current x time .
