Question 1

Which of the following is NOT one of the four fundamental forces of nature as depicted in the provided image?

Accepted Answer

Friction

Question 2

Amber and lodestone, as shown in the image, were historically important because they demonstrated which two fundamental phenomena?

Accepted Answer

Electricity and magnetism

Question 3

In the diagram showing two masses $$m_1$$ and $$m_2$$ separated by a distance $$r$$, which law best describes the force between them?

Accepted Answer

Newton's Law of Universal Gravitation: $$F = G \frac{m_1$ m_2$}{r^2$}$$

Question 4

The image with a positive and a negative circle represents which property of electric charge?

Accepted Answer

Charge polarity (positive and negative)

Question 5

In the image with three pairs of hanging spheres, what is being demonstrated?

Accepted Answer

Like charges repel and unlike charges attract

Question 6

When a plastic rod is rubbed with wool, as shown in the images, what happens to the charges?

Accepted Answer

Electrons are transferred from the wool to the rod

Question 7

Which law is illustrated by the image showing equal amounts of positive and negative charge after rubbing two objects together?

Accepted Answer

Law of conservation of charge

Question 8

In the atomic diagram, why is the nucleus positively charged?

Accepted Answer

It contains protons, which are positively charged

Question 9

If a glass rod is rubbed with silk, as shown in the images, what is the resulting charge on the glass rod?

Accepted Answer

Positive

Question 10

Which of the following best explains why protons are not transferred during charging by friction?

Accepted Answer

Protons are tightly bound in the nucleus

Question 11

What is the SI unit of electric charge?

Accepted Answer

Coulomb (C)

Question 12

Which process is responsible for the creation of ions as described in the atomic model?

Accepted Answer

Ionization

Question 13

If a neutral object becomes positively charged after friction, what has happened at the atomic level?

Accepted Answer

It has lost electrons

Question 14

Which of the following statements is true regarding the transfer of charge during friction?

Accepted Answer

Only electrons are transferred between objects

Electric Fields and Forces: Fundamental Concepts and Applications

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