Physics Current Electricity DUHS 2023
PMDC Verified Question 42 of 112
The Ohm's law is applicable if:
A
Temperature of the conductor becomes infinite
B
Temperature of the conductor increases
C
Temperature of the conductor decreases
D
Temperature of the conductor remains same
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Temperature of the conductor remains same
Concept:

Ohm's Law states that current is directly proportional to voltage, but only under strict physical constraints.

Solution:

  • The proportionality constant is Resistance (\(R\)).


  • For the relationship to be linear (ohmic), \(R\) must remain completely steady.


  • Since temperature severely alters atomic vibrations and resistance, Ohm's law strictly applies only if temperature remains exactly the same.


Why other options are incorrect:

  • Opt A, B, C: Any dynamic change in temperature breaks the linear \( V o I \) relationship.

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