Correct Answer - Option 4 : Tesla
Magnetic flux density:
Magnetic flux density is the amount of flux passing through a defined area that is perpendicular to the direction of the flux, i.e.
Mathematically, this is defined as:
\(B=\frac{ϕ}{A}\)
B = Magnetic flux density
ϕ = Magnetic Flux (weber, Wb)
A = Area (m2)
-
SI unit of the magnetic flux density (B) is Tesla (T).
-
Tesla is equivalent to one weber per meter squared or weber/meter2
- The CGS unit of B is gauss where 1 gauss = 10-4 tesla.
Important Notes:
Quantity
|
SI unit
|
Magnetic flux density
|
Tesla
|
Inductance
|
Henry
|
Charge
|
Coulomb
|
Magnetic flux
|
Weber
|
SYMBOL
|
UNIT
|
QUANTITY
|
E
|
V/m
|
Electric field Strength
|
H
|
A/m
|
Magnetic field strength
|
D
|
C/m2
|
Electric flux density
|
B
|
T
|
Magnetic flux density
|
J
|
A/m2
|
Electric current density
|
K
|
V/m2
|
Magnetic current density
|