The capacitor

Instructions:

For the 14 question:

  • choose the correct answer
  • write down your answer.

Note:

You can print this document and write your answers onto it.

Question 1

Capacitance can be described as the:

  1. flow of current
  2. ability to store a charge
  3. amount of electrical pressure
  4. amount of resistance.

Question 2

In a capacitor, what is the name given to the material separating the positive and negative plates?

  1. Resistor.
  2. Electrolyte.
  3. Diaphragm.
  4. Dielectric.

Question 3

The dielectric in a capacitor has the electrical property of:

  1. an insulator
  2. a conductor
  3. a battery
  4. a transistor.

Question 4

Which factors affect the capacitance value of a capacitor?

  1. Applied voltage, size of the plates and dielectric material.
  2. Size of plates and distance between plates and dielectric.
  3. Size of plates, applied voltage and the distance between plates.

Question 5

If the distance between the plates of a capacitor is increased, what happens to the capacitance value of the capacitor?

  1. Increases.
  2. Decreases.
  3. Remains the same.

Question 6

If the size of the plates of a capacitor is increased, what happens to the capacitance value of the capacitor?

  1. Increases.
  2. Decreases.
  3. Remains the same.

Question 7

In the following circuit diagram, locate the symbol of a capacitor. Draw a circle around it.

Circuit diagram

Question 8

What symbol is used to represent capacitance?

  1. Ω.
  2. V.
  3. Ca.
  4. C.

Question 9

What is the unit of measurement for capacitance?

  1. Volt.
  2. Farad.
  3. Henry.
  4. Coulomb.

Question 10

Draw the correct symbol for a standard capacitor in the space below.

 

 

Question 11

Draw the correct symbol for a variable capacitor in the space below.

 

 

Question 12

Draw the correct symbol for a trimmer capacitor in the space below.

 

 

Question 13

Draw the correct symbol for a polarised capacitor in the space below.

 

 

Question 14

In a circuit containing a capacitor, what is the value of current flow the instant the circuit is energised? (ie when the capacitor begins to charge.)

  1. Low.
  2. High.
  3. No current flows.

 

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