Answer: The quantities are Voltage, Current and Resistance.
Explanation: Ohm's Law is the law which directly relates Current with Voltage.
This law states that the current passing through two points of a conductor is directly proportional to the potential difference across the two points.
Mathematically,

Removing the proportionality sign by adding a constant Resistance, 'R'

where, V = Potential difference
I = Current
R = Resistance
Hence, the quantities which are related in this law are Current, Voltage and Resistance.