The amplitude of the charge oscillating in a circuit decreases exponentially as Q=Q_0 e^-R t / 2 L, where Q_0 is the charge at t=0 s. The time at…

The amplitude of the charge oscillating in a circuit decreases exponentially as $\displaystyle Q=Q_0 e^{-R t / 2 L}$, where $\displaystyle Q_0$ is the charge at $\displaystyle t=0 \mathrm{~s}$. The time at which charge amplitude decreases to $\displaystyle 0.50 Q_0$ is nearly: [Given that $\displaystyle R=1.5 \Omega, L=12 \mathrm{mH}, \ln (2)=0.693$ ]