Interaction of electric charges 

The title of the Project: Interaction of electric charges 

Purpose of the work:

  • Demonstrate electrification process;
  • Demonstrate how like and opposite charges interact with each other.

Expected results:

  • Two neutral bodies can be charged by rubbing to each other;
  • Like charges repel and opposite charges attract.

Practical part

This is a little instruction for the virtual laboratory.

Part 1. Electrification process

Virtual experiment.

Step 1. Rub one balloon onto the sweater. What happens? Balloon gets attracted to the sweater. 

Step 2. Notice that the balloon gets charged negatively and the sweater gets charged positively. Make conclusion. 

Part 2. Interaction of charged bodies

Virtual experiment.

Step 1. Take another balloon and rub it onto sweater. 

Step 2. Take both balloons, how will they interact with each other? 

Step 3. Notice that both balloons are negatively charged. Make a conclusion.

Part 3. Neutral and charged bodies

Virtual experiment.

Step 1. Take one balloon and bring it to the wall. What happens? The balloon gets attracted to the wall, although the wall is neutral.

Step 2. Notice that negative charges in the wall gets displaced slightly. 

Step 3. Remove the wall. What happens next? Make a conclusion.

Conclusion

Two neutral bodies can be charged by rubbing to each other. Like charges repel and opposite charges attract.