JAMB - Physics (2000 - No. 27)
A gas would serve as an electrical conductor under
reduced pressure and high current
increased magnetic field
reduced pressure and reduced potential
exposure to visible light
Giải thích
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.
But from Ohms Law, current is directly proportional to voltage. Thus high current presupposes high voltage.