26 Questions
What is the phenomenon caused by the presence or movement of electrically charged particles?
Electricity
What creates an electric discharge between the charged cloud and the ground during a thunderstorm?
High concentration of electrical charge in a thundercloud
What are the two forms of electricity mentioned in the text?
Electrostatics and electrodynamics
Which elementary particles carry positive charge and negative charge respectively?
Protons and electrons
What is characterized by the flow of electrons through conductors?
Electrodynamics
What does electric charge, like mass, represent?
One of the basic properties of certain elementary particles
What is the S.I. unit of electric charge?
Coulomb
What happens when an atom loses one or more electrons?
It becomes a positive ion
What is always conserved with respect to electric charge?
Electric charge
How can substances be classified in terms of their ability to conduct electric charge?
By their ability to conduct electricity
What did Charles Coulomb experimentally establish in 1785?
The fundamental law of electric force between two stationary charged particles
What is the magnitude of electric force between charges 𝑞1 and 𝑞2 separated by a distance r?
$𝑭=𝒌 \frac{𝒒𝟏 𝒒𝟐}{𝒓𝟐}$
When an atom gains one or more electrons, what does it become?
A negative ion
What is the charge of a plastic ball with a value of −10−12 𝐶?
-10 C
What happens to a sphere when it is grounded?
It loses its excess positive charge
What does a neutral metallic sphere consist of?
Equal numbers of positive and negative charges
What phenomenon causes the high concentration of electrical charge in a thundercloud during a thunderstorm?
Electrodynamics
Which particles carry positive charge and negative charge respectively in ordinary matter?
Protons and electrons
What is the origin of the word 'electricity'?
Greek word for electron
What creates an enormous spark between the charged cloud and the ground during a thunderstorm?
High concentration of electric field
What is characterized by the accumulation of charged electricity on the surface of a substance?
Electrostatics
What fundamental law of electric force did Charles Coulomb experimentally establish in 1785?
Attraction or repulsion of charges
What is the magnitude of electric force F between charges 𝑞1 and 𝑞2 separated by a distance r as per Coulomb's law?
$F=\frac{kq_1q_2}{r^2}$
What does a neutral metallic sphere consist of?
Equal numbers of positive and negative charges
What is the S.I. unit of electric charge?
Coulomb (C)
What happens when an atom loses one or more electrons?
It becomes a positive ion
Test your knowledge of electricity in physics with this quiz. Explore concepts such as electric fields, lightning, and electrical discharges observed in the sky.
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