Question

For each case, state whether the light emanates from the electrode connected to the free wire or from the electrode attached to the rim?

1) Electrode connected to the free wire
2) Electrode attached to the rim

Answer 1

The charging method used in the first experiment is conduction, yielding a positive net charge on the electroscope. In the second experiment, induction leads to a negative net charge on the electroscope after grounding and removing the positive rod.

Step-by-step explanation:

The experiments described involve two common methods of charging: conduction and induction. In the first experiment, when the positively charged glass rod is brought into contact with the electroscope, the charge is transferred directly to the electroscope through conduction. The net charge on the electroscope is positive, as it gains some of the positive charges from the glass rod.

In the second experiment, charging by induction is demonstrated. When the positively charged rod is brought near the electroscope without touching it, and the electroscope is grounded, electrons are attracted to the electroscope until the grounding is removed. Once the rod is withdrawn, the electroscope retains a net negative charge, as the excess electrons remain without the positive influence of the rod.

The net charge on the electroscope in the second experiment is different from the first. In the first, it is positive due to direct transfer of charge, while in the second, it is negative due to the induced movement of electrons while grounded.