Physics Current Electricity BUMHS 2024
PMDC Verified Question 21 of 112
No current flows between two charged bodies if they have same ____.
A
charge
B
potential
C
capacity
D
density
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: potential
Concept:

Current strictly requires a gradient (a difference) to flow, much like water needs a height difference.

Solution:

  • Electric current is driven exclusively by a Potential Difference (Voltage).


  • If two bodies are connected and sit at the exact same electric potential, the voltage difference between them is zero (\( \Delta V = 0 \)).


  • By Ohm's Law (\( I = \Delta V / R \)), if \( \Delta V = 0 \), then current \( I = 0 \).


Why other options are incorrect:

  • Opt A: Two bodies can have identical charge amounts but different potentials if their physical sizes (capacitance) differ. Current will still flow until potentials equalize.


  • Opt C & D: These do not inherently stop current flow if a potential difference exists.

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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