Quantity
Symbol
Units
Dimensions
Equations
Magnetic Flux
FB
Wb (weber)
[M L2 T –2 A–1]
FB = B
A
i
EMF
e
V (volt)
[M L2 T –3 A–1]
e = 
B
d(
)/d
N
t
Φ
−
Mutual Inductance
M
H (henry)
[M L2 T –2 A–2]
e1 
(
)
12
d2
/d
M
I
t
= −
Self Inductance
L
H (henry)
[M L2 T –2 A–2]
(
Ld /d)
I
t
ε = −
Rationalised 2023-24
Electromagnetic
Induction
175
FIGURE 6 15
6 2
Use Lenz’s law to determine the direction of induced current in the
situations described by Fig 6