Paper 2 Flashcards
1
Q
Work done
A
Work done = force × distance
E = Fd
2
Q
Power
A
power = work done ÷ time taken P = E/t
3
Q
Moment of force
A
moment of force = force × distance normal to tℎe force
4
Q
Energy transferred
A
energy transferred = cℎarge moved × potential difference
E = QV
5
Q
Charge
A
cℎarge = current × time Q = It
6
Q
Potential difference
A
potential difference = current × resistance
V = IR
7
Q
Electrical power
A
Electrical power = current × potential difference
P = IV
8
Q
Electrical power
A
Electrical power = current squared × resistance
P = I°2°R
9
Q
Density
A
density = mass ÷ volume ρ = m/V
10
Q
Force exerted on spring
A
force exerted on a spring = spring constant × extension
F = kx
11
Q
Pressure
A
pressure = force normal to surface ÷ area of surface P = F/A
