Magnetic Effects of Electric Current — Science STD 10 — Question
CBSE BoardEnglish MediumSTD 10ScienceMagnetic Effects of Electric Current1 Mark
MCQ
The frequency of $A.C$ mains in India is :
A
$30Hz$
✓
$50Hz$
C
$60Hz$
D
$120Hz$
✓
Answer
Correct option: B.
$50Hz$
In India, the $AC$ mains supply is referred to as single $-$ phase alternating current and corresponds to a voltage of $230V$ at a frequency of $50Hz,$ similar to most European countries. Whereas in the $\ce{USA, AC}$ mains supply uses $60Hz$
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