Home › UP Board Class 10 › Physics › Magnetic Effects of Electric Current › In India, the frequency of AC supply is approxim…
In India, the frequency of AC supply is approximately:
A50 Hz
B25 Hz
C60 Hz
D100 Hz
Answer & Solution
Correct answer: A. 50 Hz
1. India's domestic supply is alternating current at 220 V.
2. The current direction reverses many times per second.
3. The AC supply frequency in India is 50 Hz.
4. So the current direction reverses 100 times per second (twice per cycle).
_Source: NCERT Class 10 Science Ch 13 'Magnetic Effects of Electric Current' (learncbse.in extract)_
Related questions
Overloading of a domestic circuit happens whenMagnetic field lines are said to be crowded (closer together) where the magnetic field isA short circuit occurs whenAn electric fuse protects a circuit byIn a household wiring, the wire that acts as a safety measure by connecting the metallic bA soft iron core is used inside an electromagnet because itIn India, the alternating current supplied to homes changes its directionThe direction of the current induced in a conductor moving in a magnetic field is given by