Electrostatic Potential and Capacitance Equations
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Questions and Answers

What determines the capacitance of a capacitor purely geometrically?

  • The voltage across the plates
  • The charge on the plates
  • The separation between the plates (correct)
  • The presence of a dielectric

What happens to the capacitance of a capacitor when a dielectric is introduced between the plates?

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

What is the unit of capacitance?

  • Farad (correct)
  • Volt
  • Ampere
  • Ohm

What formula represents the total capacitance of capacitors in series?

<p>$\frac{1}{C} = \frac{1}{C_1} + \frac{1}{C_2} + \frac{1}{C_3} + ...$ (B)</p> Signup and view all the answers

What is the energy stored in a capacitor with capacitance C, charge Q, and voltage V?

<p>$U = CV^2$ (A)</p> Signup and view all the answers

In a parallel combination of capacitors, how is the total capacitance calculated?

<p>$C = C_1 + C_2 + C_3 + ...$ (A)</p> Signup and view all the answers

What causes a decrease in potential difference between the plates of a capacitor filled with a dielectric?

<p>Induced dipole moment in the dielectric (C)</p> Signup and view all the answers

What is the electric energy density in a region with an electric field?

<p>$\epsilon_0 E$ (D)</p> Signup and view all the answers

What type of generator consists of a large spherical conducting shell?

<p>Van de Graaff generator (D)</p> Signup and view all the answers

What does 'K' represent in the formula C = KC0 for a capacitor with a dielectric inserted?

<p>Dielectric constant of insulating substance (B)</p> Signup and view all the answers

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