Electric Charge Concepts Quiz
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Questions and Answers

Which property of electric charge is not satisfied?

  • Quantization of charge
  • Circular line of force (correct)
  • Two types of charge
  • Total charge conservation

    • Which of the following electric charges is possible?

  • $5.8 \times 10^{-18}$ C
  • $8.6 \times 10^{-19}$ C
  • $3.2 \times 10^{-18}$ C
  • $4.5 \times 10^{-19}$ C (correct)

    • If a charge on a body is $1$ nC, how many electrons are present on the body?

  • $6.25 \times 10^{28}$
  • $6.25 \times 10^{27}$
  • $1.6 \times 10^{19}$ (correct)
  • $6.25 \times 10^{9}$

    • What is the fundamental unit of electric charge according to the text?

    <p>The charge of an electron</p> Signup and view all the answers

    According to Gauss's law, the electric flux through any closed surface is proportional to what?

    <p>The total electric charge enclosed by the surface</p> Signup and view all the answers

    Which of the following quantities cannot be found using Gauss's law?

    <p>Electric potential</p> Signup and view all the answers

    When a soap bubble is given a negative charge, what happens to its radius?

    <p>Remains unchanged</p> Signup and view all the answers

    If two identical metal spheres A and B repel each other with a force F, and an uncharged sphere C is touched to A and then placed midway between A and B, what is the net force on C?

    <p>F towards B</p> Signup and view all the answers

    For an electric dipole placed in a uniform electric field, at what angle between the dipole moment and the electric field is the potential energy minimum?

    <p>0 radians</p> Signup and view all the answers

    An electric dipole consists of two opposite charges of magnitude 1 μC separated by a distance of 2 cm. If this dipole is placed in an electric field of 10^-5 V/m, what is the maximum torque experienced by the dipole?

    <p>4 x 10^-3 Nm</p> Signup and view all the answers

    What information do electric field lines provide?

    <p>All of the above</p> Signup and view all the answers

    If two charges, +1 μC and +2 μC, are kept at a certain separation, what will be the ratio of the electrostatic forces acting on them?

    <p>1:4</p> Signup and view all the answers

    What is the net electric flux through a closed surface that does not enclose any charge?

    <p>The flux is zero, according to Gauss's law.</p> Signup and view all the answers

    If a surface encloses an electric dipole, what is the net electric flux through the surface?

    <p>The flux is zero, as the fields due to the positive and negative charges cancel out.</p> Signup and view all the answers

    What is the electric flux through a surface when it is rotated in a uniform electric field?

    <p>The flux is maximum when the surface is perpendicular to the field.</p> Signup and view all the answers

    If a point charge $q$ is placed at a distance $a/2$ directly above the center of a square of side $a$, what is the electric flux through the square?

    <p>$q/6\epsilon_0$</p> Signup and view all the answers

    Which of the following statements about electric field lines and electric flux is correct?

    <p>The number of electric field lines entering a closed surface is always equal to the number leaving the surface.</p> Signup and view all the answers

    What is the electric flux through an infinite plane sheet of charge?

    <p>The flux is proportional to the total charge on the plane.</p> Signup and view all the answers

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