@?circuits

What three things does the resistivity depend on?? The material of the wire. The length of the wire. The cross-sectional area of the wire. If you double the length of a wire, what happens to the resistance?? It also doubles. What’s the difference between resistivity and resitance?? Resistivity is the property of a material whereas resistance is just a measurement of a component. How would you write that the resistance $R$ is directly proportional to its length $L$?

What is Ohm’s Law?? The current through an ohmic conductor is proportional to the potential difference across it when at a constant temperature. What is the symbol formula for resistance?? $$ R = \frac{V}{I} $$ What is the word formula for resistance?? $$ \text{resistance} = \frac{potential difference}{current} $$ What is the formula for potential difference $V$ in terms of resistance $R$ and current $I$?? $$ V = IR $$ What is the formula for current $I$ in terms of resistance $R$ and potential difference $V$?