Physics Electromagnetic Induction PMDC 2020
PMDC Verified Question 63 of 69
The domestic electricity supply has a frequency of:
A
150 Hz
B
100 Hz
C
50 Hz
D
25 Hz
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: 50 Hz
Concept:

Electricity grids operate at standardized frequencies depending on the region's historical infrastructural standards.

Solution:

  • In Pakistan (and many other parts of the world such as Europe and Asia), domestic AC electricity is supplied at a standard frequency of \( 50 \text{ Hz} \).


Why other options are incorrect:

Frequencies like 100 Hz, 150 Hz, or 25 Hz are not standard for modern national power grids. (Note: The US uses 60 Hz).

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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