Physics Electromagnetic Induction SZABMU 2023
PMDC Verified Question 27 of 69
The domestic electricity supply in Pakistan 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:

National power grids standardize their alternating current frequencies to ensure safe and compatible operations of all appliances.

Solution:

  • The standard frequency for the AC mains supply in Pakistan (as inherited from British engineering standards) is \( 50 \text{ Hz} \).


Why other options are incorrect:

Options A, B, and D are not standard grid frequencies anywhere in the modern world. Note: The United States and parts of South America use 60 Hz.

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