The problem with Ohms law (it is not really a problem) is that without any of the three attributes, the others exist only in name. Yes, you can have a battery with a Pd of 12V but without a path for the current to flow through, the 12 volts has potential, but it's "all dressed up, no place to go".
Similarly, you can induce current in a coil, but the only if it is connected to a circuit.
I introduced a new term above, Pd, the potential difference. Volts are the units that measure potential difference, in the same way that amperes are the units we give to current. Confusingly, current is designated I, as using C would confuse things as capacitance is C in the electrical world. One of the things I often see is people talking about the Amperage. No such term, it is current measured in amperes. It is common and quite correct to abbreviate that to amps.