PMDC Verified Question 36 of 69
The source of magnetic field is:
A
An isolated magnetic pole
B
Static electric charge
C
Nonmagnetic substance
D
Current loop
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Current loop
Concept:

Magnetic fields are fundamentally generated by moving electric charges.

Solution:

  • A current loop consists of moving electrons, which naturally produce a magnetic field governed by Ampere's Law and the Biot-Savart Law.


Why other options are incorrect:

Isolated magnetic poles (monopoles) do not exist in classical electromagnetism. Static charges produce only electric fields. Nonmagnetic substances do not generate significant magnetic fields.

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.

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.