A regenerative braking system in an electric vehicle charges a 0.050 μF capacitor to a maximum voltage of 30 kV.
i. Determine the energy stored in the capacitor when it is fully charged.
ii. During braking, the motor is powered by 20% of the stored energy for 5.0 μs. Calculate the power output of the motor during this time.

• A. $\begin{array}{l}\text{i. 21 J}\\ \text{ii. } 9.0 \times 10^{5} \mathrm{~W}\end{array}$
• B. $\begin{array}{l}\text{i. 21 J}\\ \text{ii. } 1.0 \times 10^{6} \mathrm{~W}\end{array}$
• C. $\begin{array}{l}\text{i. 23 J}\\ \text{ii. } 9.0 \times 10^{5} \mathrm{~W}\end{array}$
• D. $\begin{array}{l}\text{i. 23 J}\\ \text{ii. } 8.0 \times 10^{5} \mathrm{~W}\end{array}$