1 Answer
1 ohm (Ω) is the unit of electrical resistance in the International System of Units (SI). It is defined as the resistance between two points when a constant potential difference of 1 volt (V) causes a current of 1 ampere (A) to flow through the material.
In SI base units, 1 ohm is equivalent to:
\[
1 \, \Omega = \frac{1 \, \text{volt}}{1 \, \text{ampere}} = \frac{\text{V}}{\text{A}}
\]
So, 1 ohm can also be expressed as:
\[
1 \, \Omega = 1 \, \text{kg} \cdot \text{m}^2 \cdot \text{s}^{-3} \cdot \text{A}^{-2}
\]
This is because the volt (V) and ampere (A) can be broken down into base units of mass (kg), length (m), time (s), and electric current (A).
In simple terms, 1 ohm is the resistance that allows 1 amp of current to flow when 1 volt of potential difference is applied.
In SI base units, 1 ohm is equivalent to:
\[
1 \, \Omega = \frac{1 \, \text{volt}}{1 \, \text{ampere}} = \frac{\text{V}}{\text{A}}
\]
So, 1 ohm can also be expressed as:
\[
1 \, \Omega = 1 \, \text{kg} \cdot \text{m}^2 \cdot \text{s}^{-3} \cdot \text{A}^{-2}
\]
This is because the volt (V) and ampere (A) can be broken down into base units of mass (kg), length (m), time (s), and electric current (A).
In simple terms, 1 ohm is the resistance that allows 1 amp of current to flow when 1 volt of potential difference is applied.