Increasing the plate area
Increasing the resistance of the plates
Increasing the distance between the plates
Using high dielectric constant material
Air
Steel
Water
Platinum
Length of the coil
Direction of current
Strength of current
Strength of the magnetic field
Ampere / m2
Ampere - m
Ampere - turns
Ampere / turns
Weber/Ampere turns
Ampere turns/Weber
Weber/Square metre