Answer to Question #241588 in Electric Circuits for Tusar

Question

Unit and dimension

Answer 1

Dimensions:-

A dimension is a measure of a physical variable (without numerical values).

For example

Mass , volume

Unit:- a unit is a way to assign a number or measurement to that dimension.

For example

length is a dimension, but it is measured in units of feet (ft) or meters (m).

Magnetic flux $\phi=B.A$

Where B= magnetic field

A=area

Unit Weber

Magnetic field (B)=Wb/m²

Another example

Electric field

$E=\frac{V}{l}$

Unit $=\frac{Volt}{meter}$