14 Questions
What is the term used to describe interactions of charges when they are stationary?
Electrostatics
Who discovered the presence of electrons in 1897?
JJ Thomson
What did Benjamin Franklin name the charge on a glass rod rubbed with silk?
Positive electricity
What property of matter is carried by elementary particles?
Electric charge
What did JJ Thomson discover about all electrons present in every atom?
They have the same charge
What charge is assigned to the proton according to the text?
Positive charge
What is the fundamental property of matter that is carried by elementary particles?
Electric charge
Who discovered the presence of electrons in 1897?
JJ Thomson
What did Benjamin Franklin name the charge on materials rubbed with an animal fur?
Negative electricity
What term is used to describe the interactions of charges when they are stationary?
Electrostatics
Which scientist discovered the presence of protons in atoms?
Ernest Rutherford
What did JJ Thomson discover about all electrons present in every atom?
They have the same charge
What did Benjamin Franklin name the charge on a glass rod rubbed with silk?
Opposite electricity
Why does a charged conducting sphere have no electric field inside it according to the text?
The charges are always outside the sphere
Study Notes
Electrostatics
- Static electricity is produced when there is an imbalance of electrical charges.
- The word "electricity" comes from the Greek word "elektron", meaning amber.
Electric Charges
- Electric charges are a fundamental property of matter carried by elementary particles.
- Charges can be either positive or negative.
Benjamin Franklin
- Conducted experiments involving flying kites during thunderstorms, leading to the discovery of electric charge.
- Named the charge on a glass rod rubbed with silk as Positive electricity.
- Named the charge on materials (similar to ebonite) rubbed with an animal fur as Negative.
JJ Thompson
- Discovered the presence of electrons in 1897.
- Found that all electrons present in every atom have the same charge.
- Rutherford's experiment showed that atoms also contain protons with an opposite charge to electrons.
- Negative charge is assigned to electrons, while Positive charge is assigned to protons.
Methods of Electrostatic Charging
- Static electricity is produced when there is an imbalance of electrical charges.
- The study of stationary charges is crucial to understand electricity and magnetism.
Learn about the methods of electrostatic charging, the concept of static electricity, electrostatics, electric charges, and the fundamental property of matter carried by elementary particles. Explore the contributions of Benjamin Franklin to the understanding of electricity and magnetism.
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