Voltage applied to a material generates an electrical current across the surface of the material. The electrical resistance of the material determines how well or poorly the material will resist the flow of current (how much current can flow across the material).
Current can be predicted using a formula known as Ohm’s Law.
Ohm’s Law + i=V/r
Current (i) in amps equals voltage (V) divided by resistance (r) in ohms (Ω)
Note: Calculated current may differ from the actual current measured in laboratory tests.