Equations (Paper 2) Flashcards
What is the equation for work done?
Work done = force x distance
What is the equation for power?
Power = work done / time taken
What is the equation for calculating a moment?
Moment = force x distance perpendicular to the moment
How do you calculate energy transferred?
Energy transferred = charge x potential difference
How do you calculate charge?
Charge = current x time
How do you calculate potential difference?
Potential difference = current x resistance
What is the equation for electrical power?
Power = energy transferred / time taken
What is the equation for electrical power (involving current and resistance)?
Power = current^2 x resistance
What is the equation for electrical power (involving current and potential difference)?
Power = current x potential difference
How do you calculate density?
Density = mass / volume
How do you calculate force exerted on a spring?
Force = spring constant x extension
How do you calculate pressure?
Pressure = force / area
