Physics Current Electricity BUMHS 2024
PMDC Verified Question 22 of 112
Ohm's law state that electric current through a conductor is proportional to the applied voltage provided:
A
electric current is constant
B
electric field is constant
C
resistance is constant
D
electric charge is constant
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: resistance is constant
Concept:

Ohm's Law holds true only under strict linear conditions.

Solution:

  • The law states \( V o I \) linearly.


  • The mathematical constant of proportionality that makes this a firm equation (\( V = IR \)) is the Resistance (\(R\)).


  • For the relationship to remain perfectly proportional (a straight line graph), the resistance must remain absolutely constant. (This usually implies keeping physical states like temperature constant).


Why other options are incorrect:

  • Opt A, B, D: These are not the defined physical constraints required to maintain the proportionality of Ohm's Law.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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