Topic 2: Capacitor

Capacitance is defined as the ratio of the _____ on either plate to the potential difference between them.

• charge

• voltage

• current

• electron

1 _____ is defined as the charge of 1 coulomb stored on each of the conducting plates as a result of a potential difference of 1 volt between the two plates.

• Coulomb

• Farad

• Joule

• Newton

The charges stored, Q is ________ to the potential difference, V across the conducting plate.

• inversely proportional

• directly proportional

When a capacitor stores charge, it also stores _______

• energy

• power

• voltage

• current

5. Capacitors can undergoes two different process mainly known as ________.

• series and parallel

• charging and discharging

• positive and negative plate

• conducting and non-conducting material

The quantity RC that appears in the exponent for all equations in the charging and discharging process is called _______.

• time lapse

• time instant

• time constant

Capacitance, C of a parallel-plate capacitor is

• inversely proportional to the area, A of its plates

• proportional to the plate separation, d

• did not depends on type of dielectric insert between 2 plates

• none of above

Dielectric is defined as a _____________ material placed between the plates of a capacitor.

• conducting

• non-conducting

• non-insulating

The advantages of inserting the dielectric between the plates of the capacitor are

• decrease in capacitance

• increase in capacitance

• decrease in maximum operating voltage

_____________ is defined as ratio of permittivity of dielectric material, ℇ and permittivity of free space, ℇ0.

• Dielectric constant,

  $\epsilon_r$

• Time constant, $\tau$

• Capacitance, C