Definitions Flashcards
Define Voltage(V)
The energy transferred by 1 coulomb of charge
Define resistance(Ohms)
The ratio of potential difference to current
Define Ohm’s Law
A component obeys Ohm’s Law if the p.d. across it is proportional to the current through it, provided its temperature is constant
Define SI Unit
A system of standard units used in engineering internationally
Define SI Base Unit
The most fundamental SI Units - there ate only seven of them
Define vector quantity
A quantity with magnitude and direction
Define displacement
Distance in a given direction
Define velocity
Rate of change of displacement
Define acceleration
Rate of change of velocity
Define newton
The force required to give a mass of one kg an acceleration of 1 ms^-2
Define mass
The property of a body that resists change in motion
Define weight
The force due to gravity
Define current
Rate of flow of charge
Define coulomb
1 coulomb is the charge that crosses a section of circuit in one second with one amp
Define scalar quantity
A quantity with only a magnitude
