Question

The current I in a conductor varies with time tas
I= 4t + 9t^2where I is in ampere and t in second.
Total electric charge flowing through a section of
conductor from time t = 1 s to t = 4 s is
(1) 5 C
(2) 224 C
(3) 219 C
(4) 300 C​

Answer 1

Answer:

3) 219 C refer image for full explanation. Remember I= dQ/dt and Q= int (I dt)