why USA use 60hz frequency and INDIA use 50 hz frequency???
give the reason..

Answer Posted / ankit kumar

because, f=np/120a, agar f ko badhaya jaye to speed badh jati
hai, aur same voltage par speed badhai ja skti hai, aur hamare
india me f ko badhane ke liye kafi costly hota hai, isiliy
hamare yaha 50 hz use ki jati hai

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