Conservation of Charge and Charging Process Quiz

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Questions and Answers

What is the charge of a proton?

Positive charge (correct)

Negative charge

Neutrons

No charge

What is the charge of an electron?

Negative charge (correct)

Positive charge

Protons

No charge

Which particles are carriers of positive charges in an atom?

Neutrons

Coulombs

Electrons

Protons (correct)

Which particles are carriers of negative charges in an atom?

Electrons Signup and view all the answers

What is the SI unit for measuring the magnitude of an electric charge?

Coulombs Signup and view all the answers

Which particle is roughly 2000 times lighter than the mass of a proton or neutron?

Electron Signup and view all the answers

What happens to the charge on sphere A as the balloon is pulled away?

Electrons move across the surface until the excess positive charge is uniformly distributed Signup and view all the answers

According to the Law of Conservation of Charge, what was the overall charge of the system of two spheres before the charging process?

Zero Signup and view all the answers

What is the quantity of positive charge on sphere A equal to after induction charging?

Quantity of negative charge on sphere B Signup and view all the answers

What is the overall charge of the system of two spheres after the charging process?

+1000 units Signup and view all the answers

Which statement correctly describes what happens to charge during an induction charging process?

Charge is neither created nor destroyed; it is transferred from one object to another Signup and view all the answers

What does it mean when we say atoms are electrically neutral?

Atoms have an equal number of protons and electrons Signup and view all the answers

What is the principle of conservation of charge?

The total electric charge in a closed system is constant. Signup and view all the answers

When a plastic rod is rubbed with fur, what type of charge does the rod acquire?

Negative charge Signup and view all the answers

What is meant by the quantization of electric charge?

Observable amounts of electric charge can only be integer multiples of a basic unit. Signup and view all the answers

In terms of charge, what is a natural unit of charge?

Integer multiple of proton charge Signup and view all the answers

How does the total electric charge change when a plastic rod and fur are rubbed together?

The rod becomes negatively charged and the fur becomes positively charged. Signup and view all the answers

How many electrons are there in one coulomb of negative charge?

$6.24 \times 10^{18}$ electrons Signup and view all the answers

Study Notes

Charges of Subatomic Particles

The charge of a proton is positive.
The charge of an electron is negative.

Charge Carriers in an Atom

Protons are carriers of positive charges in an atom.
Electrons are carriers of negative charges in an atom.

Measuring Electric Charge

The SI unit for measuring the magnitude of an electric charge is the coulomb (C).

Mass Comparison

An electron is roughly 2000 times lighter than the mass of a proton or neutron.

Induction Charging

When a balloon is pulled away, the charge on sphere A remains the same.
According to the Law of Conservation of Charge, the overall charge of the system of two spheres before the charging process is zero.
The quantity of positive charge on sphere A after induction charging is equal to the quantity of negative charge on sphere B.
The overall charge of the system of two spheres after the charging process remains zero.
During an induction charging process, charge is not created or destroyed, but rather transferred from one object to another.

Electrical Neutrality of Atoms

When we say atoms are electrically neutral, it means they have an equal number of protons and electrons.

Principle of Conservation of Charge

The principle of conservation of charge states that the total electric charge of an isolated system remains constant over time.

Charge Acquired by Rubbing

When a plastic rod is rubbed with fur, the rod acquires a negative charge.

Quantization of Electric Charge

The quantization of electric charge means that electric charge comes in discrete, natural units, rather than being continuous.
In terms of charge, a natural unit of charge is the charge of a single electron or proton.

Charge Change During Rubbing

The total electric charge does not change when a plastic rod and fur are rubbed together.

Electric Charge and Electrons

There are approximately 6.24 x 10^18 electrons in one coulomb of negative charge.

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Description

Test your knowledge on the principle of conservation of charge and the process of charging objects by rubbing them together. Explore how the total electric charge remains constant in a closed system. Prepare to understand the concept of positive and negative charges through practical examples.