A gas would serve as an electrical conductor under
A
reduced pressure and high current
B
increased magnetic field
C
reduced pressure and reduced potential
D
exposure to visible light
Verified Correct Answer: A.
Physical Principles & Numerical Solution
In general, gases conduct electricity under reduced pressure and high voltage/potential.
But from Ohms Law, current is directly proportional to voltage. Thus high current presupposes high voltage.
Source: Myschool Past Questions Archive (Record #718)