KNOWLEDGE BASED
REMEMBER
4 Marks
2026
NTA-RE-NEET-2026
MCQ SINGLE
Consider two circuits, (A) and (B), each having two resistors. One of them has a positive temperature coefficient of resistance, +$\alpha$, while the other one has a negative temperature of coefficient, -$\alpha$, as shown in the figure. The current through these circuits are denoted by $I_{A}$ and $I_{B}$. At initial temperature, the resistance of the two resistors is $R_0$. As the temperature is increased, the correct option that describes the variation of current in these circuits is:
(A)
both $I_{A}$ and $I_{B}$ remain constant
(B)
$I_{A}$ remains constant while $I_{B}$ increases
(C)
$I_{A}$ decreases while $I_{B}$ increases
(D)
$I_{A}$ increases while $I_{B}$ decreases
Correct Answer: B
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