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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 $5\text{\hspace{0.17em}}(\mathrm{\Omega}\cdot \text{m}{)}^{-1}$, what is its resistivity?
A wire with a length of 4m, cross-sectional area of $2\times 1{0}^{-6}\text{\hspace{0.17em}}{\text{m}}^{2}$, and resistivity of $1.5\times 1{0}^{-8}\text{\hspace{0.17em}}\mathrm{\Omega}\cdot \text{m}$ 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?