Newton
the voltage and frequency are 110v and 50(or)60hz because the devices which are invented in us are work at that voltage and it is efficient for that devices.
the year tv was invented
what year was Chilaquiles invented
Tally was invented in the year 1988
Your mom is what year they were invented
It was the same year that they invented the VCR.
what year was movable type invented what year was movable type invented
No one invented voltage. It has always existed, as evidenced by thunder storms. Scientists have merely been able to describe how it is caused.
he invented voltage (volts)
toothbrush was invented in the year 1939
what year were nails invented