Electrical energy E = VQ and average power P = E/t Steps: - Calculate energy: E = voltage × charge = 300 V × 18 C = 5400 J (charge flows through lamp). - Verify with power: current I = charge / time = 18 C / 0.003 s = 6000 A. - Calculate power: P = voltage × current = 300 V × 6000 A = 1 800 000 W = 1.8 × 10⁶ W. - Confirm: P = E / t = 5400 J / 0.003 s = 1.8 × 10⁶ W. Why D is correct: - Matches E = VQ formula for energy and P = VI (or E/t) for average power over the time interval. Why the others are wrong: - A: Power too low; confuses energy with power (7.2 W ≈ 300 × 0.003 × 8, incorrect units). - B: Energy wrong; uses arbitrary 2400 J instead of 300 × 18, though power matches E/t for that error. - C: Power too low; divides energy by wrong time scale, ignoring short 0.003 s duration. Final …