cross section of a conductor. If a net charge
'q' passes through any cross section of the conductor in time 't',then
the average current 'i' is given by Average current i=q/t
Its units are coulomb/second. S.I units are called
ampere(A). RESISTANCE:Resistance is the ratio of the potential
difference 'V' across the conductor to the current 'i' flowing through
the conductor.
Resistance (R)=V/i S.I units of resistance is ohm.
And resistance depends upon its dimensions such as length and
area of cross section and also the temperature.
CONDUCTANCE:Conductance is defined as the reciprocal of
the resistance of a conductor.The conductance of a conductor is the
ratio of current 'i' to the voltage 'V'.
Conductance (G)=i/V S.I
unit of G is ohm inverse or siemens(S). 19:21
