To increase the current density in a wire of length l and diameter D, you can
选项:
A:decrease the potential difference between the two ends of the wire
B:increase the potential difference between the two ends of the wire.
C:decrease the magnitude of the electric field in the wire.
D:heat the wire to a higher temperature.
E:combine both (2) and (4).
发布时间:2024-04-18 20:05:20