Question

in which the following system of unit, Weber is the unit of magnetic flux
(A) CGS
(B) MKS
(C) SI
(D) none of these

Answer 1

Hint: Magnetic flux is defined as the product of the average magnetic field times the perpendicular area it penetrates. Area vector is considered as the amount of lines crossing an area also varies with the orientation of the area. It is a scalar quantity. Magnetic flux is denoted by $\phi $.

Complete step by step answer:
Weber is the SI unit of magnetic flux in the SI system. Magnetic flux is defined as the number of magnetic field lines passing through a given closed surface. It provides the measurement of the total magnetic field that passes through a given surface area. The SI base units are standard units of the measurement defined by the international system of units(SI) for the seven base quantities of what is now known as the international system of quantities. They are notably a basic set from which all other SI units can derive.

So, the correct answer is “Option A”.

Note:
Magnetic flux is commonly denoted using Greek letter Phi or Phi suffix B. Magnetic flux symbol $\phi $. Magnetic flux is usually measured with a flux meter. The SI and CGS unit of magnetic flux is given below,
SI unit of magnetic flux is Weber(Wb).The fundamental unit is Volt-seconds.
When the angle between the magnetic field vector is nearly equal to $90^\circ $, then the resulting flux is very low. When the angle is equal to $0^\circ $,. The resulting flux is maximum.