Following figures show four situations in which positive and negative charges move horizontaly through a region and give the rate at which each charge moves. Rank the situations according to the effective current through the region greatest first.

Options

A. `i=ii=iii=iv`
B. `I gt ii gt iii gt iv`
C. `I = ii =iii gt iv`
D. `i=ii=iii lt iv`

Answer

C

Explanation

Since, direction of current is in the +ve charge flow direction-
`therefore` (i) 7A, (ii) 7A, (iii) 7A, (iv) 5 A