Equations Flashcards
1
Q
Size of force
A
Size of force = magnetic flux density x current x length
2
Q
Work done
A
Work done = force x distance
3
Q
Power
A
Power = energy ÷ time
Power = current x voltage
Power= current^2 x resistance
4
Q
Charge
A
Charge = current x time
5
Q
Voltage
A
Voltage = current x resistance
6
Q
Electrical energy
A
Electrical energy = charge x voltage
Electrical energy = current x voltage x time
7
Q
Primary voltage and current
A
Primary voltage x primary current = secondary voltage x secondary current
8
Q
Density
A
Density = mass ÷ volume
9
Q
Thermal energy
A
Thermal energy = mass x specific heat capacity x thermal heat
10
Q
Energy
A
Energy = mass x latent heat
11
Q
Force (on a spring)
A
Force = spring constant x extension
12
Q
Energy (on a spring)
A
Energy = 0.5 x spring constant x extension^2
