Question

what is the defination of resistance

Answer 1

Resistance is the opposition that a substance offers to the flow of electric current.

Answer 2

$\textbf{Resistance}$:

Resistance of a conductor is the property of a conductor to oppose the flow of charge through it.

SI. unit is $\textbf{ohm. }$

Symbol is $\textbf{Omega }$.

1 ohm = 1 V / 1 A = 1 V A ^-1