Physics Current Electricity NUMS 2022
PMDC Verified Question 73 of 112
The magnitude of current in metals is proportional to the applied voltage as long as temperature of conductor is kept constant. It is statement of:
A
Joule's law
B
Gauss's law
C
Ohm's law
D
Ampere's law
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Ohm's law
Concept:

The linear relationship between current and voltage under constant physical conditions is a fundamental principle of basic circuits.

Solution:

  • The statement "\( V \propto I \) at constant temperature" is the exact textbook definition of Ohm's Law.


Why other options are incorrect:

  • Opt A: Relates heat generated to current (\( H = I^2Rt \)).


  • Opt B: Relates electric flux to enclosed charge.


  • Opt D: Relates magnetic field in a loop to the current passing through it.

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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