Gr 10 Physical Sciences Ch 12: Two kinds of charge
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Questions and Answers

What is the result when an object has equal amounts of positive and negative charge?

  • The object loses its charge completely.
  • The object becomes magnetically charged.
  • The object is electrically neutral. (correct)
  • The object becomes electrically charged.

    • What carries positive charges in an object?

  • Neutrons
  • Electrons
  • Ions
  • Protons (correct)

    • How is an object made positively charged?

  • By adding electrons to the object
  • By increasing the number of protons in the object
  • By removing electrons from the object (correct)
  • By decreasing the number of neutrons in the object

    • What is the term for the process of charging an object through contact or friction?

    <p>Tribo-electric charging (D)</p> Signup and view all the answers

    What happens to the cloth when a plastic ruler is rubbed against it?

    <p>The cloth becomes positively charged. (A)</p> Signup and view all the answers

    What determines the tendency of materials to gain or lose electrons in tribo-electric charging?

    <p>The material's position in the tribo-electric series (D)</p> Signup and view all the answers

    What is the result of rubbing wool against amber?

    <p>The amber becomes negatively charged. (B)</p> Signup and view all the answers

    What is the net charge of an object with eight positive charges and six negative charges?

    <p>+2 (B)</p> Signup and view all the answers

    What is the force exerted by static charges on each other called?

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

    What happens when like charges interact with each other?

    <p>They repel each other (C)</p> Signup and view all the answers

    What is the term for the transfer of electrons between materials through contact or rubbing?

    <p>Tribo-electric charging (D)</p> Signup and view all the answers

    What is the result of an imbalance in the number of positive and negative charges in an object?

    <p>A charged object (D)</p> Signup and view all the answers

    What happens to the strength of the electrostatic force as the distance between charges decreases?

    <p>It increases (D)</p> Signup and view all the answers

    What is the principle that states that the total charge remains constant during the transfer process?

    <p>Conservation of charge (C)</p> Signup and view all the answers

    What is responsible for carrying negative charges in an object?

    <p>Electrons (C)</p> Signup and view all the answers

    What happens to the strength of the electrostatic force as the distance between charges increases?

    <p>It decreases (A)</p> Signup and view all the answers

    What is the term for an object that has an equal number of positive and negative charges?

    <p>Neutral Object (A)</p> Signup and view all the answers

    What is the result of the interaction between opposite charges?

    <p>Attraction (C)</p> Signup and view all the answers

    What is the underlying principle that explains the charging of an object through tribo-electric charging?

    <p>Conservation of Charge (D)</p> Signup and view all the answers

    What is the force exerted by moving charges on each other called?

    <p>Magnetic Force (A)</p> Signup and view all the answers

    What is the effect of having an equal number of positive and negative charges on an object?

    <p>It remains neutral (D)</p> Signup and view all the answers

    Which type of charge is carried by electrons?

    <p>Negative charge (A)</p> Signup and view all the answers

    What is the net charge of an object with six positive charges and nine negative charges?

    <p>-3 (C)</p> Signup and view all the answers

    What happens when a material is more positive in the tribo-electric series?

    <p>It loses electrons (C)</p> Signup and view all the answers

    Why does an object become electrically charged?

    <p>Due to an imbalance in the number of positive and negative charges (C)</p> Signup and view all the answers

    What happens when you rub a plastic ruler against a cotton cloth?

    <p>The ruler becomes negatively charged (D)</p> Signup and view all the answers

    What is the result of having an imbalance in the number of positive and negative charges in an object?

    <p>The object becomes electrically charged (C)</p> Signup and view all the answers

    What determines the overall charge of an object?

    <p>The difference between the number of positive and negative charges (A)</p> Signup and view all the answers

    What is the result when an object has a net negative charge?

    <p>It has an excess of electrons. (B)</p> Signup and view all the answers

    Which of the following is a way to make an object electrically charged?

    <p>By changing the number of electrons. (C)</p> Signup and view all the answers

    What determines the direction of charge transfer in tribo-electric charging?

    <p>The position of the objects in the tribo-electric series. (B)</p> Signup and view all the answers

    What happens to the plastic ruler when it is rubbed against a cotton cloth?

    <p>It becomes negatively charged. (D)</p> Signup and view all the answers

    What is the result of rubbing amber against wool?

    <p>The amber becomes negatively charged. (B)</p> Signup and view all the answers

    Why do like charges repel each other?

    <p>Due to the inherent property of similar charges to resist each other (B)</p> Signup and view all the answers

    What is the underlying reason for the strength of the electrostatic force increasing as the distance between charges decreases?

    <p>As a result of the inverse square law of electrostatic forces (B)</p> Signup and view all the answers

    What is the net result of tribo-electric charging on the total charge of the system?

    <p>The total charge remains constant (B)</p> Signup and view all the answers

    Why do opposite charges attract each other?

    <p>Due to the inherent property of dissimilar charges to combine (D)</p> Signup and view all the answers

    What is the significance of the electrostatic force in understanding electrical interactions?

    <p>It plays a crucial role in understanding electrical interactions at both microscopic and macroscopic levels (A)</p> Signup and view all the answers

    What is the underlying reason for the transfer of charge between two objects in tribo-electric charging?

    <p>The difference in the tendency of the materials to gain or lose electrons (D)</p> Signup and view all the answers

    What is the underlying principle that explains the charging of an object through tribo-electric charging?

    <p>The transfer of electrons between materials (B)</p> Signup and view all the answers

    What is the net charge of an object with seven positive charges and eight negative charges?

    <p>Negative charge of -1 (D)</p> Signup and view all the answers

    What is the effect of tribo-electric charging on the overall charge of an object?

    <p>It can either increase or decrease the number of electrons (C)</p> Signup and view all the answers

    What is the relationship between the tribo-electric series and the direction of charge transfer?

    <p>Materials higher in the series tend to lose electrons, while those lower tend to gain electrons (A)</p> Signup and view all the answers

    What is the result of having a large number of electrons in an object?

    <p>The object becomes negatively charged (C)</p> Signup and view all the answers

    How does the overall charge of an object change when it is made electron-deficient?

    <p>It becomes positively charged (A)</p> Signup and view all the answers

    What determines the net charge of an object?

    <p>The difference between the number of positive and negative charges (C)</p> Signup and view all the answers

    What is the underlying principle that explains the charging of an object through tribo-electric charging and other methods?

    <p>The principle of charge conservation (C)</p> Signup and view all the answers

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