Diagram based questions:
One solar panel produces a potential difference of 18 V and current 3A. Describe how you can obtain a potential difference of 72 volts and current of 9 A with a solar array using solar panels. You can use sign of a battery for a solar panel.

Explanation

A solar panel producing patential difference of 18 V and current of 3 A is represented below.

ii. Four solar panels producing 18 V and 3A should be connected in series to from a solar string producing potential difference of 72 V and current of 3 A.

iii. The solar string producing 72 V and 3 A is connected in parallel with two more solar strings producing 72 V and 3 A to form a solar array producing a potenial difference of 72 V and current of 9 A.