electrostatic: electric potential - itb blogscapacitor •charged : equal magnitudes but opposite...

17

{ Electrostatic: Electric Potential Chapter 24 Halliday-Resnick 9 th Ed.

Upload: others

Post on 17-Feb-2020

3 views

Category:

Documents

0 download

Report

Download

Embed Size (px):

TRANSCRIPT

Page 1: Electrostatic: Electric Potential - ITB BLOGSCapacitor •Charged : equal magnitudes but opposite signs: +q and -q. •charge of a capacitor = q, •q net charge on the capacitor,

{

Electrostatic:Electric Potential

Chapter 24 Halliday-Resnick 9th Ed.

Page 2: Electrostatic: Electric Potential - ITB BLOGSCapacitor •Charged : equal magnitudes but opposite signs: +q and -q. •charge of a capacitor = q, •q net charge on the capacitor,

= ; =

= ln + + /

Potential due to a continuouscharge distribution:Line of charge

= /== = = += +

Page 3: Electrostatic: Electric Potential - ITB BLOGSCapacitor •Charged : equal magnitudes but opposite signs: +q and -q. •charge of a capacitor = q, •q net charge on the capacitor,

Potential due to a continuouscharge distribution:charged disk =====

= + −= += +

Page 4: Electrostatic: Electric Potential - ITB BLOGSCapacitor •Charged : equal magnitudes but opposite signs: +q and -q. •charge of a capacitor = q, •q net charge on the capacitor,

Calculating the Field from the Potential= −a positive test charge moves through adisplacement from one equipotentialsurface to the adjacent surface.the work the electric field does on the testcharge during the move is == cos

= −= −= −= −

Page 5: Electrostatic: Electric Potential - ITB BLOGSCapacitor •Charged : equal magnitudes but opposite signs: +q and -q. •charge of a capacitor = q, •q net charge on the capacitor,

The electric potential energy of a system of fixedpoint charges is equal to the work that must bedone by an external agent to assemble the system,bringing each charge in from an infinite distance.

Electric Potential Energy of a System of Point Charges

=

Page 6: Electrostatic: Electric Potential - ITB BLOGSCapacitor •Charged : equal magnitudes but opposite signs: +q and -q. •charge of a capacitor = q, •q net charge on the capacitor,

What is the electricpotential energy of thissystem of charges? Assumethat = 2 and thatql = +3 nC,q2 = -2 nCq3 = +5 nC,

Page 7: Electrostatic: Electric Potential - ITB BLOGSCapacitor •Charged : equal magnitudes but opposite signs: +q and -q. •charge of a capacitor = q, •q net charge on the capacitor,

Potential of a Charged IsolatedConductor

− = − ∙= 0, inside the conductor− = 0=

Page 8: Electrostatic: Electric Potential - ITB BLOGSCapacitor •Charged : equal magnitudes but opposite signs: +q and -q. •charge of a capacitor = q, •q net charge on the capacitor,

{Capacitance

Chapter 25 Halliday-Resnick 9th Ed.

Page 9: Electrostatic: Electric Potential - ITB BLOGSCapacitor •Charged : equal magnitudes but opposite signs: +q and -q. •charge of a capacitor = q, •q net charge on the capacitor,

Page 10: Electrostatic: Electric Potential - ITB BLOGSCapacitor •Charged : equal magnitudes but opposite signs: +q and -q. •charge of a capacitor = q, •q net charge on the capacitor,

{

Capacitors

Page 11: Electrostatic: Electric Potential - ITB BLOGSCapacitor •Charged : equal magnitudes but opposite signs: +q and -q. •charge of a capacitor = q, •q net charge on the capacitor,

Capacitor• Charged : equal magnitudes but

opposite signs: +q and -q.• charge of a capacitor = q,• q net charge on the capacitor,

which is zero• all points on a plate are at the same

electric potential.• there is a potential difference be

tween the two plates• The charge q and the potential

difference V for a capacitor areproportional to each other:= , C: capacitance

Page 12: Electrostatic: Electric Potential - ITB BLOGSCapacitor •Charged : equal magnitudes but opposite signs: +q and -q. •charge of a capacitor = q, •q net charge on the capacitor,

a measure of how much charge must be puton the plates to produce a certain potentialdifference between them:

The greater the capacitance, the more chargeis required.

The SI unit of capacitance : coulomb per volt(a.k.a. farad [F])

1 farad = 1 F = 1 coulomb per volt = 1 e/v.

Capacitance =

Page 13: Electrostatic: Electric Potential - ITB BLOGSCapacitor •Charged : equal magnitudes but opposite signs: +q and -q. •charge of a capacitor = q, •q net charge on the capacitor,

Calculating the CapacitanceElectric Field= ∙ ==

Potential Difference− = − ∙= + ∙

Page 14: Electrostatic: Electric Potential - ITB BLOGSCapacitor •Charged : equal magnitudes but opposite signs: +q and -q. •charge of a capacitor = q, •q net charge on the capacitor,

Parallel platecapacitor:so large, so close togetherthe fringing of the electricfield can be neglected

Electric Field= ∙ ==Potential Difference− = − ∙= + ∙ =

= → = =Geometry dependent

Page 15: Electrostatic: Electric Potential - ITB BLOGSCapacitor •Charged : equal magnitudes but opposite signs: +q and -q. •charge of a capacitor = q, •q net charge on the capacitor,

Cylindrical Electric Field= ==Potential Difference= + ∙= −= ln= ln /

Page 16: Electrostatic: Electric Potential - ITB BLOGSCapacitor •Charged : equal magnitudes but opposite signs: +q and -q. •charge of a capacitor = q, •q net charge on the capacitor,

Spherical Electric Field= ==Potential Difference= + ∙= − 4= 4 1 − 1

= − = 1 − /

Page 17: Electrostatic: Electric Potential - ITB BLOGSCapacitor •Charged : equal magnitudes but opposite signs: +q and -q. •charge of a capacitor = q, •q net charge on the capacitor,

INVESTIGATION OF CHARGE-RATE INCREASE FOR A CAPACITOR

˘ ˇ ˆ - TI.com · C2+ 15 Positive terminal of the charge-pump capacitor C2F C2− 13 Negative terminal of the charge-pump capacitor C2F ... SLVS215C − JUNE 1999 − REVISED AUGUST

Physics 2102 Capacitors Gabriela González. Capacitors and Capacitance Capacitor: any two conductors, one with charge +Q, other with charge -Q +Q -Q Uses:

CHAPTER – 31 CAPACITOR - PlusTwoPhysics · As this is a series combination, the charge on each capacitor is same as the equivalent charge which is 110 C.

following topics. Chapter 26akruger.weebly.com/uploads/2/0/5/6/20564332/exam_2_study... · 2018. 9. 9. · Chapter 26 A capacitor has charge +Q and –Q stored on two charge conductors,

1 Chapters 24 and 26.4-26.5. 2 Capacitor ++++++++++ ++++++++++++++ - - - - - - - - - - - - - - - - - - - - - - - - - - +q -q Any two conductors separated

· Web viewThe capacitor stores charge, and is what is read when determining the logic state of a cell. The transistor acts as a control for storing charge within the capacitor

SECTION 4 SWITCHED CAPACITOR VOLTAGE CONVERTERS …...reached, the charge pump capacitor only has to supply a small amount of charge to the output capacitor on each switching cycle

Charge and Discharge of a Capacitor - WebAssign

CapSense and organic materials · 6.10.2014 · Capacitance • The ability to store electrical charge • Everything can store charge! Capacitor . Capacitor . Capacitor dielectric%

oscillations - BGUgluskin/files/Semi_Empirical.Solitons.jp1v4p801.pdf · N° 5 THE SEMI-EMPIRICAL CONSTRUCTION OF SOLITONS 805 where q,~ is the initial charge on the capacitor, and

LT3751 - High Voltage Capacitor Charger Controller with · PDF file · 2014-02-04High Voltage Capacitor Charger Controllerwith Regulation ... CHARGE = 5V Not Switching, CHARGE = 0.3V

PART A : CLASS XII PHYSICS Q1...Refer Gig. 1.2 The capacitor A has charge q on it whereas B has not been charged. The charge appearing on the capacitor B, a long time after the switch

CHAPTER – 31 CAPACITOR · 31.1 CHAPTER – 31 CAPACITOR 1. Given that Number of electron = 1 × 1012 Net charge Q = 1 × 1012 × 1.6 × 10–19 = 1.6 × 10–7 C The net potential

Capacitor - University of Rhode Island · Capacitor and Capacitance Capacitor(device): • Two oppositely charged conductors separated by an insulator. • The charges +Q and −Q

RC Circuit: Charging Capacitor R V C ++ -- a b i Instantaneous charge q on a charging capacitor: At time t = 0: q = CV(1 - 1); q = 0 At time t = : q

CHAPTER 13 ALTERNATING CURRENTS - UVicorca.phys.uvic.ca/~tatum/elmag/em13.pdf · 2 13.2 Alternating Voltage across a Capacitor At any time, the charge Q on the capacitor is related

Reduced Recombination and Capacitor-like Charge Buildup in

CEN00529-00 HB205-1M0, HB215LC-1M0 CRAWLER …Inverter and Capacitor The inverter and the capacitor have high reliability with the dedicated cooling system. The capacitor can charge

STEPPER MOTOR CONTROLLER ICCP1 23 IO Charge pump flying capacitor Connect a 0.22-μF capacitor between CP1 and CP2. CP2 24 IO Charge pump flying capacitor Connect a 0.22-μF capacitor

SP3222E / SP3232E Data Sheet - maxlinear.com · C1- Negative terminal of the voltage doubler charge-pump capacitor 4 4 3 C2+ Positive terminal of the inverting charge-pump capacitor

The parallel-plate capacitor charged with q, then: energy density

±50°/s Yaw Rate Gyro · 6D, 7D CP5 HV Filter Capacitor (0.1 nF). 6A, 7B CP4 Charge Pump Capacitor (22 nF). 6C, 7C CP3 Charge Pump Capacitor (22 nF). 5A, 5B CP1 Charge Pump Capacitor

Capacitor: any two conductors, one with charge +Q, other with

±300°/sec Yaw Rate Gyro ADXRS610 · 6D, 7D CP5 HV Filter Capacitor (0.1 μF). 6A, 7B CP4 Charge Pump Capacitor (22 nF). 6C, 7C CP3 Charge Pump Capacitor (22 nF). 5A, 5B CP1 4A,

Capacitance: When a capacitor is charged, its plates have charges of equal magnitudes but opposite signs: q+ and q-. However, we refer to the charge of

AQA Capacitor Charge and Discharge - theonlinephysicstutor

AQA Capacitor Charge and Discharge - Online Physics Tutor

The Capacitor A capacitor is an electronic device which can store charge. The symbol for a capacitor is: Capacitance is measured in Farads (F) or, more

Charge and Discharge of a Capacitor - WebAssign · Charge and Discharge of a Capacitor INTRODUCTION Capacitors1 are devices that can store electric charge and energy. Capacitors have

UNIVERSITY OF MALTA G.F. ABELA JUNIOR COLLEGE · PDF file09.06.2012 · Page 3 of 16 Capacitance: Charge on capacitor: Q =CV Parallel-plate capacitor: C 0 r A d εε = Alternating

Reliability (and Security) Issues of DRAM and NAND Flash ... · 8/7/2014 · The DRAM Scaling Problem ! DRAM stores charge in a capacitor (charge-based memory) " Capacitor must be

Two conductors in proximity form a “capacitor”: they have a capacity to hold a charge Q (+Q on one and -Q on the other) with a voltage difference V. C=Q/V

Circuits - Physics with Dr. Wintersdrwinters.weebly.com/.../8/0/5/5/8055982/ap-c_circuits.pdfThe charge Q and potential difference V for a capacitor are proportional: Q = CV where

Charging capacitor V = V Stored charge V = V B + Q V = V B ...ee.sc.edu/personal/faculty/simin/ELCT102/16 Capacitor energy... · Energy stored in capacitor Electric Energy = Charge