The current in the wire depends on _____________
A) Only on the potential difference applied
B) Only on the resistance of air
C) On the potential difference and resistance
D) None of them.

Hint: Ohm's law relates to the circuit current flow, the resistance of the resistor, and the potential difference in the circuit. The voltage or potential difference divided by the resistance is the mathematical formula for evaluating the current flow in the circuit. By applying ohm's law the relationship between the current in the wire, potential difference and voltage can be found.

Complete step by step answer:
The rate of charge flow across the circuit is defined as a current the movement of the current opposite to the movement of the electron. The resistance is to reduce the current flow across the circuit. The measurable property of the material which is used to stop the current flow in the conductive material is known as resistance. The resistance of the material causes heat generation in the material and can be measured in the ohm unit. The potential difference across the two-point essential for current flow is called voltage.

The expression for finding current flows through the wire given by ohms law is:
     $I = \dfrac{V}{R}$
Where $I$ is the current flowing in the wire, $V$ is the potential difference across the circuit and $R$ is the resistance of the circuit.

By Ohm's law the current flowing in the circuit directly depends on the potential difference of the circuit and inversely proportional to the resistance of the circuit.

Hence, option C is correct.


Note:
The potential difference across the circuit depends directly on current flows through the wire, and resistance across the wire and resistance across the circuit depends directly on potential difference and inversely proportional to the current flows through the wire.