Positively charged rod to an uncharged electroscope

Click For Summary
SUMMARY

Bringing a positively charged rod near an uncharged electroscope causes the leaves of the electroscope to diverge due to charge separation. The negative charges (electrons) in the electroscope are attracted to the positively charged rod, moving towards the knob, while the positive charges remain fixed in the lattice structure of the metal. This results in a net positive charge at the leaves, leading to their divergence. The movement of electrons is the key mechanism behind this phenomenon.

PREREQUISITES
  • Understanding of electrostatics and charge interactions
  • Knowledge of conductors and insulators
  • Familiarity with the structure of atoms, particularly protons and electrons
  • Basic principles of electric fields and forces
NEXT STEPS
  • Study the principles of electrostatic induction
  • Learn about the behavior of conductors in electric fields
  • Explore the concept of charge separation in conductive materials
  • Investigate the applications of electroscopes in measuring charge
USEFUL FOR

Students of physics, educators teaching electrostatics, and anyone interested in understanding the principles of charge interactions and electroscope functionality.

PhysKid24
Messages
22
Reaction score
0
Hi I was just wondering what the answer to the following question would be:

If you bring a positively charged rod to an uncharged electroscope causing the vanes or leaves inside to diverge, are negative charges attracted to the knob of the electroscope or do positive charges repel to the vanes of the electroscope? I think it's the latter, but not sure why it also couldn't be the first.
 
Physics news on Phys.org
In the electroscope, which is a solid conductor, only the negative charges (electrons) are free to move. The positive charges (protons in the metal atoms) are fixed in a lattice structure (the metal atoms are not free to move).
 

Similar threads

High School Can electrons pass through a positively charged disc in electrostatic induction?
  • · Replies 10 ·
Replies
10
Views
2K
Experiment with an Electroscope, a Charged Rod and my hand
  • · Replies 4 ·
Replies
4
Views
2K
Debugging a Kelvin Water Dropper
  • · Replies 10 ·
Replies
10
Views
2K
How do the electroscope leaves behave after grounding?
  • · Replies 8 ·
Replies
8
Views
5K
Help with leaf electroscope for school use please!
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Basic(?) Electroscope/Electrometer Question
  • · Replies 6 ·
Replies
6
Views
4K
High School Problems I Have With Electrostatics and Pith Ball Experiments
  • · Replies 10 ·
Replies
10
Views
5K
Undergrad Electroscope Charge Distribution
  • · Replies 3 ·
Replies
3
Views
3K
High School Electric Field Direction: Are We Assuming a Universal Positive Frame?
  • · Replies 20 ·
Replies
20
Views
3K
High School How is surface charge accumulated?
  • · Replies 36 ·
2
Replies
36
Views
7K