Two wires P and Q made up of different materials have same resistance at room temperature, when heated, resistance of P increases and that of Q decreases. We conclude that

Question

Two wires P and Q made up of different materials have same resistance at room temperature, when heated, resistance of P increases and that of Q decreases. We conclude that (A) P and Q both are conductors but because of being made of different materials it happens so (B) P is n-type semiconductor and Q is p-type semiconductor (C) P is semiconductor and Q is conductor (D) P is conductor and Q is semiconductor

Tardigrade Admin · Accepted Answer

Resistance of conductors increases with rise in temperature while decreases in case of semiconductors. So, clearly P is conductor whereas Q is semiconductor.

Q. Two wires $P$ and $Q$ made up of different materials have same resistance at room temperature, when heated, resistance of $P$ increases and that of $Q$ decreases. We conclude that

P and Q both are conductors but because of being made of different materials it happens so

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

Resistance of conductors increases with rise in temperature while decreases in case of semiconductors.
So, clearly $P$ is conductor whereas $Q$ is semiconductor.

Q. Two wires P and Q made up of different materials have same resistance at room temperature, when heated, resistance of P increases and that of Q decreases. We conclude that