Here we have $=50\mathrm{.}0,$ and $=12\mathrm{.}0.$ The capacitor is initially charged to $9\mathrm{.}0$V and the switch is

closed at t $=0\mathrm{.}00$s$.$

What is the time constant of the circuit?

a$.10\mathrm{.}0$

b$.600$

c$.3\mathrm{.}60$

d$.6\mathrm{.}08$

What is the initial current in the circuit?

a$.1\mathrm{.}25$

b$.75\mathrm{.}0$

c$.125$

d$.750$

What is the potential across the resistor at t$=1\mathrm{.}00$s$?$

a$.1\mathrm{.}70$

b$.3\mathrm{.}40$

c$.5\mathrm{.}66$

d$.18\mathrm{.}9$