27. Resistors & DC Circuits
Resistors and Ohm's Law
27. Resistors & DC Circuits Resistors and Ohm's Law
20PRACTICE PROBLEM
A silver wire with a radius of 0.10 mm and a length of 1.50 m is connected to the terminals of a 4.5 V ideal battery. The electrical resistivity of silver increases with temperature and follows the relationship ρ = 1.59 × 10 -3 Ω•m [1 + 0.0038 °C -1 (T - 20 °C)]. Calculate the current flowing through the wire at 25 °C.
A silver wire with a radius of 0.10 mm and a length of 1.50 m is connected to the terminals of a 4.5 V ideal battery. The electrical resistivity of silver increases with temperature and follows the relationship ρ = 1.59 × 10 -3 Ω•m [1 + 0.0038 °C -1 (T - 20 °C)]. Calculate the current flowing through the wire at 25 °C.