2. dφ
e=N
dt
Where,
e
=
Instantaneous induced voltage in volts
N
=
Number of turns in wire coil (straight wire = 1)
d
=
Rate of change of flux
Φ
=
Magnetic flux in webers
t
=
Time in seconds
3. 2
N µ0µr A
L=
l
Where
L
=
Inductance in Henrys
N
=
The number of turns in the inductor coil
μr
=
Relative permeability
μo
=
Permeability of free space in henrys/m (Hm)
A
=
Cross-sectional area in square metres (m2)
l
= Length of the conductor that makes up the coil in metres (m).
