What is the highest voltage ever produced? © Getty Images

What’s the highest voltage ever produced?

The highest voltage ever was produced by a tandem at a laboratory in Tennessee, USA, but how many volts did they reach?

Asked by: Scott Lloyd, Leigh


Van de Graaff generators produce the highest voltages. Charge is carried by an insulating belt from a lower electrode to another at the top, accumulating across a metallic dome. They can be strapped together to form tandems for even higher voltages. A tandem at Oak Ridge National Laboratory produced the highest ever at 25.5MV (a megavolt is 1 million volts).

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