A 1.5 V battery is connected to two copper wires that are connected together in series, as shown below. Wire 1 has a diameter of 1 mm and a length of 0.5 m. Wire 2 has a diameter of 2 mm and the same length as Wire 1. The mobile electron density of copper n is , and the electron mobility in copper u is .
Circuit with a battery and two copper wires of different diameters connected in series.
- What is the potential difference across each wire?
- What is the electric field in each wire?
- What is the drift speed of mobile electrons in each wire?
- What is the current through each wire?