Which equation is correct according to ohms law ?

You didn't mention the choices.  But that's OK.  ANYBODY can pick
the right choice from a list.  It takes the brave, heroic, and fearless
men of to supply the right formula without any suggestions. 
We have done so much with so little for so long, than now, we can
do anything with nothing in no time.

Ohm's Law describes the instantaneous relationship among
the voltage across, the current through, and the resistance of,
a dissipative component in a DC circuit.

Since there are three variables, there are three equations.
Each expresses one variable in terms of the other two.
Find one of these on your list of choices, and pick that one:

         Voltage       = (current) x (resistance)

         Current       = (voltage) / (resistance)

         Resistance = (voltage) / (current)  .

Nucleus for question ome

Iwould sure like to answer your question but i honestly just don’t know