Suppose the `19 Omega` resistor of the previous problem is disconnected. Find the current through `P_2 Q_2` in the two situations (a) and (b) of that problem.

Explanation

(a) No current will pass as circuit is incomplete
(b) As circuit is complete
`(V_(P_2)(Q_2))=Blv`
`=1xx0.04xx0.05`
`=2xx10^(-3)V`
`R=2 Omega`
`i=(2xx10^(-3))/2`
`=1xx10^(-3)A =1 mA.`