Resistance and ohm's law
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. Download the above content in MS-Word: Download