Question

The amount of charge passing through cross section of a wire is,q(t)=atsquare+bt+c .if the values of a,b,c in SI unit are 5,3,1 are respectively.find the value of current at t=5sec

Answer 1

Given q = at² + bt + c

I = dq/dt

I = 2at + b

I at t=5s ; a=5 ; b = 3

I = 2(5)(5) + 3

I = 53 A