Physics Current Electricity UHS 2022
PMDC Verified Question 53 of 112
The resistance of a conductor does not depend on which of the following?
A
Area
B
Resistivity
C
Length
D
Mass
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Mass
Concept:

Electrical resistance is determined by the physical geometry of the conductor and the intrinsic property of the material.

Formula:

$$ R = \rho \frac{L}{A} $$

Solution:

  • The formula explicitly shows resistance depends on: Length (L), Cross-sectional Area (A), and Resistivity (\(\rho\)).


  • Mass itself is not a direct variable in calculating resistance (though it indirectly relates to volume). You can have a heavy, bulky block of copper and a thin long wire of copper with the same mass but vastly different resistances.


Why other options are incorrect:

  • Opt A, B, C: These are all direct factors that define resistance.

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.

Previous Question All Current Electricity MCQs Next Question

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.

Enter Arena Sprint iOS App Android App