The given I-V characteristic curve shows a device that produces current when exposed to light (positive current for positive voltage). This characteristic is shown by a solar cell. Solar cells convert light energy into electrical energy. The other options have different I-V characteristics.
The graph shows the variation of current with voltage for a p-n junction diode. Estimate the dynamic resistance of the diode at \( V = -0.6 \) V.
In the given circuit, the equivalent resistance between points A and D is:
AB is a part of an electrical circuit (see figure). The potential difference \(V_A - V_B\), at the instant when current \(i = 2\) A and is increasing at a rate of 1 amp/second is: