Resistance and ohm's law

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Resistance:-
-          Property of substance which opposes the flow of electrons through it.
-          Unit : ohm (Ω)

-          Being applied voltage remaining constant, if the resistance is high then the current flow will be less.


Ohm’s Law:-
-          Remaining physical conditions such as temperature, strain etc., of the conductor as constant, the current flowing through a conductor is directly proportional to the potential difference across the conductor.
-          IαV, Temparature constant.
-          1/R is the proportionality constant.
-          By removing the proportionality constant by putting equality constant.
I=V/R;   T= constant.
-          So, if the potential is high current will be high.
-          If the resistance of a substance is high then the current flow will be low.


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