Ohm’s Law: If physical
conditions like temperature, intensity of light etc. remains unchanged then electric current flowing
through a conductor is directly proportional to the potential difference across
its ends. If V is the potential difference across the ends of conductors and I
is the current through it, then according to Ohm,s LawV is directly proportional to I or V=RI
R is a constant called resistance of conductor A force, such as friction, that operates
opposite the direction of motion of a body and tends to prevent or slow down
the body's motion. A measure of the
degree to which a substance impedes the flow of electric current induced by a
voltage. Resistance is measured in ohms.
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