Physics AS terminology

current

amount of charge per second

voltage

amount of energy per 1 coulomb of charge

resistance

potential required to get 1 amp of current/ amount of current per 1V

electrical energy

work done when charge moves through a potential difference

e.m.f.

total energy provided by a source to move 1 coulomb of charge through a circuit

potential divider

a combo of resistors connected in series across a voltage source to produce a required pd

equilibrium

net force is zero, net moment is zero

centre of mass

point where entire mass of object appears to acts

centre of gravity

point through which entire weight of an object acts

moment of a couple

Two equal and opposite parallel forces that act on an object through different lines of action, causing a rotation without translation.

moment

The product of a force and the perpendicular distance from the line of action of the force to the pivot.

principle of moments

sum of clockwise=sum of anticlockwise