A Canadian company has developed a scanning device that can detect
drugs, explosives, and even cash that are being smuggled across state
borders. The scanner uses accelerated protons to generate gamma rays,
which can easily penetrate through most substances that are less than a
few centimeters thick. At the heart of the scanner is a compact power
supply that can produce an electric potential as large as 1.0 × 106V. Find
the value of a point charge q that would create an electric potential of
1.0 × 106V at a distance of 12 cm.

Question

A Canadian company has developed a scanning device that can detect
drugs, explosives, and even cash that are being smuggled across state 
borders. The scanner uses accelerated protons to generate gamma rays,
which can easily penetrate through most substances that are less than a
few centimeters thick. At the heart of the scanner is a compact power
supply that can produce an electric potential as large as 1.0 × 106V. Find
the value of a point charge q that would create an electric potential of
1.0 × 106V at a distance of 12 cm.