Question

Current versus time t graph through a conductor
is shown in the figure. Average current through the
conductor in the interval 0 to 15 s
(1) 1A
(2) 10 A
(3) 7.5A
(4) 5A​

Answer 1

answer : option (4) 5A

explanation : first of all, you should know how to find average current?

average current through the conductor = total charge flows through the conductor/total time taken.

so, we have to find total charge flows through the conductor.

we also know, area under the current - time graph given total charge.

so, total charge flows through the conductor = area of triangle [ as graph is shown in figure .]

= 1/2 × 15sec × 10 Ampere

= 75 C

and total time taken = 15sec

now, average current through the conductor = 75C/15sec = 5A