PH-1084

I–V characteristics

Physics · Secondary 4 · Hard · I–V characteristics

From

0\,\text{V}

0.25\,\text{V}

, the current through a diode is zero. Above

0.25\,\text{V}

, the current increases rapidly with voltage. Which statement best describes the resistance of the diode over this range?

It is extremely large below $0.25\,\text{V}$ and decreases sharply above $0.25\,\text{V}$ .
It is constant for all voltages.
It is zero below $0.25\,\text{V}$ and very large above $0.25\,\text{V}$ .
It increases steadily as voltage increases.

Loading problem…