Electrical resistance

• Resistance is the opposition to the flow of current.
• The symbol for resistance is R.
• The unit of resistance is the ohm (\Omega).
• A larger resistance means a smaller current for a given potential difference.
• It also transfers electrical energy into other forms (usually heat).

Resistance equation

\text{resistance} = \frac{\text{voltage}}{\text{current}}

R=\frac{V}{I}