In the circuit shown in the fig., `R_(1): R_(2) : R_(3) = 4 : 1 : 2`.
(a) Will the current through `R_(1)` increase or decrease when a new resistance `R_(4)` is added in parallel to `R_(2)` ?
(b) Change in current through `R_(1)` when `R_(4)` is added is found to be `0.2 A`. Calculate the current through `R_(4)`.

Answer

(a) Increase
(b) `I_(4) = 1.4 A`