Question

The current in A that can be supplied by the two panels at the maximum power output is

• A. 2.17
• B. 3.01
• C. 4.34
• D. 8.68

Hint:

For solar panels in series: voltage adds, power adds, current remains the same for both panels.

Answer 1

The Correct Option is C

Step 1: Compute panel area.
Area = 1.3 × 0.65 = 0.845 m²

Step 2: Effective area with 90% cell coverage.
A\(_{eff}\) = 0.845 × 0.90 = 0.7605 m²

Step 3: Incident solar power.
Power\(_{in}\) = 0.7605 × 750 = 570.375 W

Step 4: Output electrical power with 13.7% efficiency.
P\(_{out}\) = 570.375 × 0.137 = 78.14 W (per panel)

Step 5: Two panels in series.
Power doubles: 2 × 78.14 = 156.28 W
Voltage doubles: 18 + 18 = 36 V

Step 6: Current calculation.
\[ I = \frac{P}{V} = \frac{156.28}{36} = 4.34\ \text{A} \]

Final Answer: (C) 4.34