Wires P and Q have the same resistance at ord | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The resistance of a conductor increases with an increase in temperature because the positive temperature coefficient of resistance is positive. Co

Vedclass · Accepted Answer

$P$ is conductor and $Q$ is semiconductor

Vedclass · Answer

(D) The resistance of a conductor increases with an increase in temperature because the positive temperature coefficient of resistance is positive. Conversely,the resistance of a semiconductor decreases with an increase in temperature because it has a negative temperature coefficient of resistance. Since the resistance of $P$ increases upon heating,$P$ must be a conductor. Since the resistance of $Q$ decreases upon heating,$Q$ must be a semiconductor. Therefore,the correct conclusion is that $P$ is a conductor and $Q$ is a semiconductor.

Wires $P$ and $Q$ have the same resistance at ordinary (room) temperature. When heated,the resistance of $P$ increases and that of $Q$ decreases. We conclude that

Similar Questions

Which of the following is a reducing sugar?

If the normal to the curve $y^2 = 5x - 1$ at the point $(1, -2)$ is of the form $ax - 5y + b = 0$,then $a$ and $b$ are:

The ratio of the longest wavelengths corresponding to the Lyman and Balmer series in the hydrogen spectrum is

What is the cell wall of bacteria composed of?

If $\frac{\cos x}{\cos (x-2y)} = \lambda$,then $\tan (x-y) \tan y$ is equal to

Vedclass Test Series

Exam Paper Generator

Online Exam Module