Explore what factors are related to the size of the resistance

(1) How is the resistance reflected in the experiment?

Hint: Connect an ammeter to the circuit, and compare the resistance of the connected wires by the magnitude of the number indicated by the current. The larger the current value, the smaller the resistance; the smaller the current value, the larger the resistance.

(2) Does the resistance of a conductor depend on temperature? How to design experiments to verify conjectures?

Hint: related. The experimental design is shown in the figure. Connect the filament of a waste fluorescent lamp to the circuit. After closing the switch, use an alcohol lamp to heat the filament. Observe whether the brightness of the bulb changes when heating and when heating is stopped. If the brightness of the bulb changes, the resistance of the conductor is related to temperature. In general, the higher the temperature of a metal conductor, the greater its resistance.