PH-1087

I–V characteristics

Physics · Secondary 4 · Hard · I–V characteristics

A student measures a current of

4.0\,\text{mA}

when the potential difference across a diode is

0.50\,\text{V}

. Later, the current is

8.0\,\text{mA}

0.55\,\text{V}

. What is the approximate resistance of the diode at

0.55\,\text{V}

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