Answer:A
Step-by-step explanation:
In R-L circuit current is given by
![i=i_0\left [ 1-e^{(-t)/(L/R)}\right ]](https://img.qammunity.org/2020/formulas/physics/college/gj3ccwgpgxps939t47jzhd7tcxglzda1q0.png)
where i=current at any time t

R=resistance
L=Inductance
at t=0
approaches to 1
therefore
![i=i_0\left [ 1-1\right ]](https://img.qammunity.org/2020/formulas/physics/college/6h62z6h751nn7yy7zmluo9it6p57ngdn97.png)
i=0
when t approaches to
,
approaches to zero
thus

thus we can say that initially circuit act as broken wire with zero current
and it increases exponentially with time and act as ordinary connecting wire