lecture12 - Ca pa ci ta nce (I I ) Ca Capaci tor s i n ci r...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
Capacitance (I I ) Capacitance (I I ) Capacitors in circuits Electrostatic potential energy
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Capacitors in Circuits Capacitors in Circuits Symbols: or Capacitor Battery Switch + + - -
Background image of page 2
Capacitor Combinations Capacitor Combinations A B Series A B Parallel What is the “effective capacitance ” between A & B? A B +Q -Q charge held voltage difference eff C =
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Parallel Parallel C 1 C 2 C 3 A B V Voltages are the same : V 1 = V 2 = V 3 = … = V Charges add : Q Q Q Q = + + + ... 3 2 1 But… ... , , 2 2 1 1 V C Q V C Q = = ... 2 1 + + = C C C eff 1 2 ...... eff Q Q C V + + =
Background image of page 4
Series Series Voltages add : V V V = + + ... 2 1 Charges are equal: Q Q Q Q = = = 3 2 1 And … 1 2 1 1 1 ... V 1 , but , .... eff V V C Q Q C + + = = ... + + + = 3 2 1 1 1 1 1 C C C C eff +Q -Q +Q -Q +Q -Q C 1 C 3 C 2 A B
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Example Example 8uF 4uF 2uF 6uF 1uF 3uF b a Find the equivalent capacitance between a and b.
Background image of page 6
Solution
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Example Find the equivalent capacitance between points a and b in the combination of capacitors shown below
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 16

lecture12 - Ca pa ci ta nce (I I ) Ca Capaci tor s i n ci r...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online