Question

The slope of the V-I curve of a solar cell is 66.1°. Calculate the value of resistance. Assume the relationship between voltage and current is a straight line.

(a) 3.5 Ω

(b) 2.2 Ω

(c) 2.5 Ω

(d) 2.9 Ω

The question was asked in an international level competition.

I'm obligated to ask this question of Solar Panels topic in portion Solar and Battery Powered Drives of Electric Drives

Answer 1

Right answer is (b) 2.2 Ω

The best explanation: The slope of the V-I curve of a solar cell is resistance. The slope given is 66.1° so R=tan(66.1°)=2.2 Ω. The slope of the I-V curve is reciprocal of resistance.