Definition:
An electronic component which has ability to
pass from any conductor by a difficulty is called a resistance. The resistance happened in a conductor
due to its conductivity which provides difficulty in the way of current. The SI
unit of resistance is ohm. In other words," The characteristic of a conductor
which has the ability to misplace some amount of current in its cross-sectional
area is called a resistance".
Formula
Its formula is is driven by ohm’s
law of resistance:
As ohm’s law states:
V=IR then
R=V/I
Laws of resistance
- The resistance is directly proportional to the
length of a conductor, where the area of a conductor remains constant.
- The resistance is inversely proportional to the cross sectional area of a conductor, where the length of a conductor remains constant.
SI unit
The SI unit of an electric resistance is ohm and is denoted
by Ω."Ohm is defined as the electric
resistance between two points of a conductor is when one volt is applied to its
both points".Its formula is given below:
