Not used in Pakistan: frequencies other than 50 Hz. For domestic and small businesses: voltages other than 220 v.
Voltage in India is 230V / 50 Hz
230V/50Hz
Pakistan has a 220 v 50 Hz domestic supply and the three-phase voltage is sqrt(3) times higher, or 381 v. Higher voltage are also used for three-phase power transmission.
Mauritius uses 230 V @ 50 Hz (the US and Canada are 120 V @ 60 Hz)
There is no fixed connection between frequency (Hertz) and voltage, you can have 60 Hz at any voltage.
Dubai uses 220 VAC at 50 Hz (in the USA, we use 120 VAC at 60 Hz). They also use the G type plug.
60 Hz
50 Hz 220 V
there is 100 ac Voltage in phone line in Pakistan
The standard voltage in Poland is 220 volts at 50 Hz. - Neeraj Sharma
Voltage does not have a waveform. The waveform is based upon the frequency of the voltage or current. A battery (any voltage) does not waveform, however the voltage coming into your house (US) has a frequency of 60 Hz. The length of the 60 hz waveformLength (in centimeters) = (3 x (10 ** 10))/ Frequency in hz =500 000 000 cm