explain resistance
Resistance is a property of material which opposes the flow of current through it. It is symbolised by R and its unit is ohm.
It is of two types:
(1) Fixed resistance:- Resistance remains the same/fixed.
(2) Variable resistance:- Resistance don't remains the same or can be changed/varied by using rheostat.
Conductor have low resistance while insulators have high resistance that's why current doesn't flow through the insulators.
And according to ohm's law the resistance of a material is equal to the ratio of voltage applied to the electric current flowing through it.
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