The sun deliverse 103 W/m2 of electromagnetic flux to the earth's surface. The total power that is incident on a roof of dimensions 8m × 20m, will be: |
6.4 × 103 W 3.4 × 104 W 1.6 × 105 W None of these |
1.6 × 105 W |
Power P = SA = 103 × 8 × 20 = 1.6 × 105 W |