Rankers Physics

Properties of Semiconductors: Practice Problem & Solution

Wires P and Q have the same resistance at ordinary (room) temperature. When heated, resistance of P increases and that of Q decreases. We conclude that :
P and Q are conductors of different materials
P is N-type semiconductor and Q is P-type semiconductor
P is semiconductor and Q is conductor
P is conductor and Q is semiconductor

Solution Explained:

To solve this problem, we apply the core principles of Properties of Semiconductors. Understanding the underlying formula is key to arriving at the correct answer below:

Resistance of conductor increases with increasing temperature and resistance of semiconductor decreases with increasing temperature.

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