What is the difference between voltage and current?
The voltage (or potential difference) between two points is the cost in energy to move a unit of positive charge from the point of lower potential to the point of higher potential. Current is the rate of flow of electric charge through a point. A potential difference across two points on a circuit causes an electric current to flow between them.
DW
Related Physics GCSE answers
All answers ▸what are the energy changes when a car rolls from the top of a hill to the bottom? Name two forces that would slow the acceleration of the car?
What is terminal velocity and what causes it?
Calculate the total resistance across AB; between A and B are two parallel branches, one branch with a 3 Ohm and a 5 Ohm resistor, the other branch with a 4 Ohm resistor.
Assuming no friction, describe the motion of a simple pendulum released from rest at t=0 at amplitude A? Provide information about its speed and position at characteristic times during one period. [The 1D equation of motion is described by a cosine]