Electrical energy from VQ and average power from E/t Steps:

• Calculate electrical energy: E = V × Q = 300 V × 18 C = 5400 J
• Calculate average power: P = E / t = 5400 J / 0.003 s = 1,800,000 W = 1.8 × 10⁶ W Why D is correct:
• Matches E = VQ (work = voltage × charge transferred) and P = E/t (average power = energy / time interval) Why the others are wrong:
• A: Energy too low (wrong Q); power ignores short duration (P = E/t underestimated)
• B: Energy too low (wrong Q); power consistent with that error but invalid overall
• C: Energy correct but power too low (misapplies P, e.g., ignores t or uses P = V/t)

Final answer: D