Physics Equations Flashcards
1
Q
How do you calculate power?
A
Work done/time
2
Q
How do you calculate moment of a force?
A
Force x distance (normal to the direction of force)
3
Q
How do you calculate charge?
A
Current x time
4
Q
How do you calculate energy transferred?
A
Charge moved x p.d.
5
Q
How do you calculate potential difference ?
A
Current x resistance
6
Q
How do you calculate power (without work done)?
A
Energy transferred / time taken
7
Q
How do you calculate electrical power (voltage)?
A
Current x p.d.
8
Q
How do you calculate electrical power (ohms)?
A
Current (squared) x resistance
9
Q
How do you calculate density?
A
Mass / volume
10
Q
How do you calculate force exerted on a spring?
A
Spring constant x extension
11
Q
How do you calculate pressure?
A
Force (normal to surface) x area of surface
