question_answer

When the key K is pressed at time \[t=0,\] then which of the following statement about the current I in the resistor AB of the given circuit is true?

A)  \[I=1\,\,mA\]all \[t\]

B)  \[I=2\,\,mA\]at all \[t\]

C)  \[I\] oscillates between \[I\] mA and 2 mA

D)  at t = 0,1 = 2 mA and with time it goes to 1 mA