Physics - Semiconductors Question with Solution | TestHub

For a semiconductor, the number density of charge carriers (electrons and holes) increases exponentially with an increase in temperature.

This causes the resistivity and hence the resistance of the semiconductor to decrease as temperature increases (semiconductors have a negative temperature coefficient of resistivity).

Since the semiconductor is connected in series in the circuit, the total resistance of the circuit decreases.

According to Ohm's law, $I=\frac{V}{R}$, a decrease in the total resistance results in an increase in the current flowing through the circuit.

Answer: increase.