The plot represents the flow of current through a wire at three different times. The ratio of charges flowing through the wire at different times is

Options

A. `2:1:2`
B. `1:3:3`
C. `1:1:1`
D. `2:3:4`

Answer

C

Explanation

Charge = area under the current - time graph
`q_(1) = 2xx1 = 2, q_(2) 1xx2 = 2`, and `q_(3) = (1)/(2)xx2xx2 = 2`
`q_(1) : q_(2) : q_(3) = 2 : 2 : 2: = 1 : 1 : 1`