Resistivity and Conductivity

Given a circuit with a 10V battery and a resistance of 2 ohms, what is the current flowing through the circuit?

What information is needed to calculate the resistance of a wire based on the wires physical properties?

If the conductivity of a material is $5(\mathrm{\Omega }\cdot \text{m}{)}^{-1}$, what is its resistivity?

A wire with a length of 4m, cross-sectional area of $2\times 10^{-6}{\text{m}}^2$, and resistivity of $1.5\times 10^{-8}\mathrm{\Omega }\cdot \text{m}$ is connected across a 12V battery. What is the current passing through the wire?

What information about a wire is required to calculate the current passing through it?

How does the resistivity of a typical metallic conductor change with increasing temperature?

If the resistivity of a material increases, what happens to the resistance of a wire made from that material, assuming its dimensions remain constant?

According to Ohm’s Law, if the resistance in a circuit increases while the voltage remains constant, how does the current change?

A resistor heats up as current runs through it. If the voltage is held constant, how does the current through the circuit change over time?