Question
Question: The charge flowing in a conductor varies with time as Q = at – bt<sup>2</sup>. Which of the followin...
The charge flowing in a conductor varies with time as Q = at – bt2. Which of the following is correct?
A
The current decreases linearly with time
B
The current reaches a maximum and then decreases
C
The current falls to zero at t = a/2b
D
The current changes at a rate – 4b
Answer
The current falls to zero at t = a/2b
Explanation
Solution
Q = at – bt2 ; I = a – 2bt; 0 = a – 2bt; t = a/2b