Question 1

A capacitor used in a timer circuit discharges through a(an) ________.&#10;A)RAM&#10;B)Element&#10;C)Fuse&#10;D)Resistor

Accepted Answer

Capacitors in timer circuits discharge through resistors, which control the rate of discharge and thus the timing interval.

Question 2

Capacitance is governed by all of these EXCEPT ________.&#10;A)Space between condenser plates&#10;B)Conductor diameter&#10;C)Surface area of the condenser plates&#10;D)Dielectric material used

Accepted Answer

Capacitance is primarily determined by the surface area of the condenser plates (larger area increases capacitance), the distance between the plates (closer plates increase capacitance), and the dielectric material used (materials with higher dielectric constants increase capacitance). The diameter of the conductor connected to the plates does not directly affect the capacitance of the capacitor.

Question 3

This schematic shows ________.  &#10;A)Capacitors in parallel&#10;B)Batteries in parallel&#10;C)A diode trio&#10;D)Capacitors in series

Accepted Answer

Capacitors in parallel&#10;

Question 4

Capacitors are often used as voltage ________.&#10;A)Conductors&#10;B)Resistors&#10;C)Shock absorbers&#10;D)Transformers

Accepted Answer

Capacitors are often used as voltage shock absorbers because they can store and release electrical energy, which helps in smoothing out voltage fluctuations in a circuit.

Question 5

Which event causes the capacitor to retain a voltage potential?&#10;A)Closed circuit&#10;B)Open circuit&#10;C)Both A and B&#10;D)Neither A nor B

Accepted Answer

Capacitors retain a voltage potential when they are in an open circuit because there is no path for the charge to flow off the capacitor plates. In a closed circuit, the charge would dissipate.

Question 6

Conductors in a capacitance device are separated by ________.&#10;A)Insulators&#10;B)A vacuum&#10;C)Conductors&#10;D)None of these

Accepted Answer

Conductors in a capacitance device are separated by insulators, which prevent charge from moving between the conductors and allow the device to store electrical energy.

Question 7

Which of these has the lowest dielectric constant?&#10;A)Mica&#10;B)Vacuum&#10;C)Paper&#10;D)None of these

Accepted Answer

The dielectric constant of a vacuum is defined as 1, which is the lowest possible value for a dielectric constant. This makes vacuum the material with the lowest dielectric constant among the options given.

Question 8

Materials with higher dielectric constant ratings have ________ resistance to electrical current.&#10;A)Lower&#10;B)Higher&#10;C)Equal&#10;D)None of these

Accepted Answer

Materials with higher dielectric constant ratings have higher resistance to electrical current because they are better insulators.

Question 9

What was the name of the first capacitance device?&#10;A)Leyden jar&#10;B)Capacitor&#10;C)Battery&#10;D)None of these

Accepted Answer

The Leyden jar, invented in the 18th century, is considered the first device that could store electric charge, making it the earliest form of a capacitor.

Question 10

In what year was electrical capacitance discovered?&#10;A)1908&#10;B)1745&#10;C)1846&#10;D)None of these

Accepted Answer

Electrical capacitance was discovered in 1745 with the invention of the Leyden jar, an early type of capacitor.

Deck 46: Capacitance and Capacitors