Gr 11 Physical Sciences: Ch 7.1 Coulomb’s law
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Questions and Answers

What happens when like charges interact with each other?

  • They attract each other
  • They do not interact with each other
  • The force between them is zero
  • They repel each other (correct)

    • What is the electrostatic force proportional to?

  • The sum of the charges
  • The product of the charges (correct)
  • The square root of the charges
  • The difference between the charges

    • What happens to the electrostatic force when the distance between the charges increases?

  • It becomes zero
  • It decreases (correct)
  • It increases
  • It remains the same

    • Who first studied the electrostatic force in detail?

    <p>Charles-Augustin de Coulomb</p> Signup and view all the answers

    What is the value of the electrostatic constant in free space?

    <p>9.0 × 10^9 N·m^2/C^2</p> Signup and view all the answers

    What is the form of Coulomb's law similar to?

    <p>Newton's law of universal gravitation</p> Signup and view all the answers

    What is the electrostatic force between two point-like charges inversely proportional to?

    <p>The square of the distance between the charges</p> Signup and view all the answers

    What is the force exerted by particles that interact by means of a field?

    <p>Both electrostatic and gravitational forces</p> Signup and view all the answers

    What is the relationship between the electrostatic force and the distance between the charges?

    <p>The electrostatic force decreases with the distance between the charges.</p> Signup and view all the answers

    What is the value of the electrostatic constant in free space?

    <p>9.0 × 10^9 N·m^2/C^2</p> Signup and view all the answers

    What is the relationship between the electrostatic force and the magnitude of the charges?

    <p>The electrostatic force increases with the magnitude of the charges.</p> Signup and view all the answers

    What is the mathematical form of the equation that describes the electrostatic force between two point charges?

    <p>F = k(Q_1 × Q_2)/r^2</p> Signup and view all the answers

    What is the similarity between Coulomb's law and Newton's universal law of gravitation?

    <p>Both describe forces that diminish with the square of the distance between the particles.</p> Signup and view all the answers

    What happens to the electrostatic force when the distance between the charges doubles?

    <p>The electrostatic force decreases by a factor of four.</p> Signup and view all the answers

    What is the significance of the inverse-square relationship in physics?

    <p>It illustrates the importance of distance in the interaction between particles.</p> Signup and view all the answers

    What is the gravitational force between two masses described by?

    <p>F_G = G(m_1 × m_2)/d^2</p> Signup and view all the answers

    What is the similarity between the electrostatic force and the gravitational force?

    <p>Both forces follow an inverse-square relationship with the distance between the particles.</p> Signup and view all the answers

    What is the importance of Coulomb's law in understanding the behavior of charged particles?

    <p>It provides a quantitative description of the electrostatic force.</p> Signup and view all the answers

    What is the effect on the electrostatic force when the magnitude of one of the charges is tripled?

    <p>The electrostatic force is multiplied by nine.</p> Signup and view all the answers

    Why do Coulomb's law and Newton's law of gravitation have similar mathematical forms?

    <p>Because they both describe forces that follow an inverse-square relationship.</p> Signup and view all the answers

    What is the significance of the inverse-square relationship in the context of Coulomb's law?

    <p>It means that the electrostatic force decreases rapidly with increasing distance.</p> Signup and view all the answers

    What is the physical quantity that determines the strength of the electrostatic force between two point charges?

    <p>The product of the magnitudes of the charges.</p> Signup and view all the answers

    What is the effect on the electrostatic force when the distance between the charges is halved?

    <p>The electrostatic force is multiplied by four.</p> Signup and view all the answers

    What is the fundamental principle underlying both Coulomb's law and Newton's law of gravitation?

    <p>The principle of inverse-square relationships.</p> Signup and view all the answers

    How does the electrostatic force between two point charges change when the charges have opposite signs?

    <p>The electrostatic force becomes attractive.</p> Signup and view all the answers

    What is the role of the electrostatic constant in Coulomb's law?

    <p>It relates the electrostatic force to the product of the charges and the distance.</p> Signup and view all the answers

    What is the significance of the mathematical form of Coulomb's law?

    <p>It illustrates the common feature of inverse-square relationships in physics.</p> Signup and view all the answers

    Why is Coulomb's law important in understanding the behavior of charged particles?

    <p>Because it describes the electrostatic force between point charges.</p> Signup and view all the answers

    What is the direction of the electrostatic force between two point-like charges with the same sign?

    <p>Repulsive</p> Signup and view all the answers

    What happens to the electrostatic force between two point-like charges if one of the charges is doubled?

    <p>It increases by a factor of four</p> Signup and view all the answers

    What is the physical quantity that is proportional to the product of the charges and inversely proportional to the square of the distance between them?

    <p>Electrostatic force</p> Signup and view all the answers

    What is the name of the scientist who first studied the electrostatic force in detail?

    <p>Charles-Augustin de Coulomb</p> Signup and view all the answers

    What is the unit of the electrostatic constant in free space?

    <p>N·m^2/C^2</p> Signup and view all the answers

    What is the similarity between the electrostatic force and the gravitational force?

    <p>Both are inverse-square laws</p> Signup and view all the answers

    What happens to the electrostatic force between two point-like charges if the distance between them is tripled?

    <p>It decreases by a factor of nine</p> Signup and view all the answers

    What is the characteristic of the electrostatic force that is similar to the gravitational force?

    <p>It is a long-range force</p> Signup and view all the answers

    What is the electrostatic force similar to in terms of interaction?

    <p>Gravitational force</p> Signup and view all the answers

    What is the electrostatic constant proportional to?

    <p>Neither of the above</p> Signup and view all the answers

    What happens to the electrostatic force when the magnitude of one of the charges is quadrupled?

    <p>It becomes four times</p> Signup and view all the answers

    What is the direction of the electrostatic force between two point-like charges with opposite signs?

    <p>Attractive</p> Signup and view all the answers

    What is the significance of the inverse-square relationship in Coulomb's law?

    <p>The force decreases with distance</p> Signup and view all the answers

    What is the physical quantity that determines the strength of the electrostatic force between two point charges?

    <p>Product of the charges</p> Signup and view all the answers

    What is the unit of the electrostatic constant in free space?

    <p>N·m^2/C^2</p> Signup and view all the answers

    What is the characteristic of the electrostatic force that is similar to the gravitational force?

    <p>Inverse-square relationship</p> Signup and view all the answers

    What is the primary difference between Coulomb's law and Newton's universal law of gravitation?

    <p>The forces they describe are between different types of particles.</p> Signup and view all the answers

    Why do both Coulomb's law and Newton's universal law of gravitation exhibit an inverse-square relationship?

    <p>Because the forces diminish rapidly as the distance between interacting particles increases.</p> Signup and view all the answers

    What is the significance of the electrostatic constant in Coulomb's law?

    <p>It is a fundamental constant of nature.</p> Signup and view all the answers

    What is the effect on the electrostatic force when the magnitude of one of the charges is quadrupled?

    <p>The electrostatic force increases by a factor of 16.</p> Signup and view all the answers

    What is the relationship between the electrostatic force and the distance between the charges when the distance is tripled?

    <p>The electrostatic force decreases by a factor of 9.</p> Signup and view all the answers

    What is the primary characteristic of the electrostatic force and the gravitational force?

    <p>They are both inversely proportional to the square of the distance.</p> Signup and view all the answers

    What is the role of the distance between the charges in Coulomb's law?

    <p>It is inversely proportional to the square of the electrostatic force.</p> Signup and view all the answers

    What is the significance of the mathematical form of Coulomb's law?

    <p>It is a fundamental principle of physics.</p> Signup and view all the answers

    What is the primary difference between the electrostatic force and the gravitational force?

    <p>The electrostatic force is between point charges, while the gravitational force is between masses.</p> Signup and view all the answers

    What is the significance of the inverse-square relationship in Coulomb's law?

    <p>It illustrates the rapid decrease in force with increasing separation.</p> Signup and view all the answers

    What is the primary reason for the similarity between Coulomb's law and Newton's universal law of gravitation?

    <p>They both have a mathematical form that is inversely proportional to the square of the distance</p> Signup and view all the answers

    What is the effect on the electrostatic force if the distance between the charges is halved and the magnitude of one of the charges is doubled?

    <p>The force increases by a factor of 16</p> Signup and view all the answers

    What is the significance of the electrostatic constant in Coulomb's law?

    <p>It determines the magnitude of the electrostatic force</p> Signup and view all the answers

    What is the primary characteristic of the electrostatic force and the gravitational force that is similar?

    <p>They both exhibit an inverse-square relationship</p> Signup and view all the answers

    What is the effect on the electrostatic force if the magnitude of one of the charges is tripled and the distance between the charges is doubled?

    <p>The force decreases by a factor of 2.25</p> Signup and view all the answers

    What is the relationship between the electrostatic force and the distance between the charges when the distance is quadrupled?

    <p>The force decreases by a factor of 16</p> Signup and view all the answers

    What is the primary difference between Coulomb's law and Newton's universal law of gravitation?

    <p>Coulomb's law describes the electrostatic force, while Newton's law describes the gravitational force</p> Signup and view all the answers

    What is the significance of the inverse-square relationship in the context of Coulomb's law?

    <p>It emphasizes the role of the distance between the charges in determining the electrostatic force</p> Signup and view all the answers

    Why do both Coulomb's law and Newton's universal law of gravitation exhibit an inverse-square relationship?

    <p>Because they both describe the interaction between particles with a 1/r^2 dependence</p> Signup and view all the answers

    What is the physical quantity that determines the strength of the electrostatic force between two point charges?

    <p>The product of the charges and the distance between them</p> Signup and view all the answers

    What is the primary reason why Coulomb's law is similar to Newton's universal law of gravitation?

    <p>Both laws describe the force exerted by particles that interact by means of a field.</p> Signup and view all the answers

    If the distance between two point-like charges is doubled, what happens to the electrostatic force between them?

    <p>The electrostatic force decreases by a factor of four.</p> Signup and view all the answers

    What is the significance of the proportionality constant k in Coulomb's law?

    <p>It is a measure of the strength of the electrostatic force.</p> Signup and view all the answers

    Why do unlike charges attract each other?

    <p>Because they have different signs.</p> Signup and view all the answers

    What is the physical quantity that determines the strength of the electrostatic force between two point charges?

    <p>The magnitude of the charges.</p> Signup and view all the answers

    What is the effect on the electrostatic force between two point-like charges if one of the charges is tripled?

    <p>The electrostatic force increases by a factor of three.</p> Signup and view all the answers

    What is the primary difference between Coulomb's law and Newton's universal law of gravitation?

    <p>Coulomb's law is used to describe the force exerted by charged particles, while Newton's law is used to describe the force exerted by massive particles.</p> Signup and view all the answers

    What is the significance of the mathematical form of Coulomb's law?

    <p>It describes the inverse-square relationship between the electrostatic force and the distance between the charges.</p> Signup and view all the answers

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