C21 Capacitance Flashcards

1
Q

Describe the structure of a capacitor

A

They consist of two metallic plates separated from each other by an insulator known as a dielectric.

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2
Q

Examples of dielectrics used in a capacity

A
  • Air
  • Paper
  • Ceramic
  • Mica
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3
Q

What is the ‘capacitance’ of a capacitor?

A

The amount of charge (Q), that a capacitor can store for a given p.d. (V)

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4
Q

Formula for capacitance and unit

A

C = QV
Q = VC

c = capacitance in farads (F)

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