Using one of Kirchoff's laws in physics, we find that the current $I$, flowing in a particular electric circuit satisfies the equation $$\displaystyle 0.3\frac{dI}{dt}+10I=15 .$$ (The resistance is 10 ohms, the inductance is 0.3 henry, and there is a 15 volt battery.)

Part A) Sketch the phase portrait of the differential equation.

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Part B). If the initial current, $I(0)$, is 2 amps, use part (a) to describe the value of $I$ for large values of $t$. ?? tends to zero tends to equilibrium grows without bound

Part C). If you entered 'tends to equilibrium' for part (b), what is the value of the equilibrium? Enter 'NA' if you chose another answer for part (b).
The equilibrium point is .