Question

What is unit of resistance and current?

Answer 1

Resistance:

1. Resistance is a measure of the opposition to current flow in an electrical circuit.
2. The symbol of resistance is the uppercase letter R.
3. Resistance is measured in ohms, symbolized by the Greek letter omega $\left(\Omega \right)$.
4. Ohms are named after a German physicist who studied the relationship between voltage, current, and resistance.

Current:

1. Current is a flow of electrical charge carriers, usually electrons.
2. The common symbol for current is the uppercase letter I.
3. The standard unit is the ampere, symbolized by $A$.

Relationship between resistance and current:

1. Ohm's law gives the relationship between resistance, current, and voltage.
2. According to this law, $V\propto I$ Or $V=IR$, Where $V$=Voltage, $I$=Current, $R$= Resistance,
3. Or $R\propto \frac{1}{I}$, more the resistance, less the current, and vice versa.

Thus Units of resistance and current are ohms and amperes, respectively.