Question

How do you explain the relationship between voltage and current?

Answer 1

Atoms make up all materials, and protons, neutrons, and electrons make up all atoms. The electrical charge of protons is positive. Electrons have a negative electrical charge, but Neutrons have no electrical charge. Atoms are held together by strong forces of attraction between the nucleus and the electrons in the outer shell of the atom.

Complete step by step solution:
According to Ohm's law, the current flowing through a conductor between two locations is proportional to the voltage across the conductor. When the proportionality constant, resistance, is included, the typical mathematical equation that represents this connection emerges.
$I=\dfrac{V}{R}$
where I denote the current through the conductor in amperes, V denotes the voltage measured across the conductor in volts, and R is the conductor's resistance in ohms. Ohm's law indicates that the R in this relationship remains constant regardless of the current.
The above equation cannot be termed Ohm's law if the resistance is not constant, but it may still be used to define static/DC resistance. The conductivity of the great majority of electrically conductive materials is properly described by Ohm's law across several orders of magnitude of current. Non-ohmic materials, on the other hand, do not follow Ohm's law. The rule was named after German physicist Georg Ohm, who reported measurements of applied voltage and current via basic electrical circuits comprising varying lengths of wire in a book published in 1827. Ohm's experimental results were explained by a somewhat more complicated equation.
Ohm's law is one of the most fundamental and significant rules in electric circuits. If all physical parameters and temperature stay constant, Ohm's law asserts that the voltage across a conductor is precisely proportional to the current flowing through it.

Note:
For most materials, Ohm's law is an empirical law, a generalisation of numerous experiments that have demonstrated that current is roughly proportional to the electric field. It is not usually followed and is less basic than Maxwell's equations. Under a high enough electric field, any material will break down, and some materials of importance in electrical engineering are "non-ohmic" under weak fields. On a wide range of length scales, Ohm's law has been observed. It was assumed in the early twentieth century that Ohm's law would fail at the atomic level, but tests have shown that this is not the case.