(a) With the help of a suitable circuit diagram peove that the reciprocal of the equivalent
resistance of a group of resistances joined in parallel is equal to the sum of the
reciprocals of the individual resistances.
(b) In an electric circuit two resistors of `12 Omega` each are joined in parallel to a `6V` battery.
Find the current drawn from the battery.

Explanation

`I=I_(1)+I_(2)+I_(3)`
`(V )/(R_(p))=(V )/(R_(1))+(V)/(R_(2))+(V )/(R_(2))`
`(1)/(R_(p))=(1)/(R_(1))+(1)/(R_(2))+(1)/(R_(2))`