Flashcards
Chapter 21
Flashcards do conjunto (17)
- 1Law of Conservation of Electric ChargeElectric charge cannot be created or destroyed
- 2Electrical ConductionMotion of charges from one location to another
- 3ConductorsMaterials that charge CAN move though freely
EX: metal, salt water, human body - 4InsulatorMaterials that charge CANNOT move through freely.
EX: glass, wood, earth - 5Semiconductorin between a conductor and insulator
- 6Electric Charges on neutral objectsCharges in the insulator move toward the opposite external charges and away from like charges. i.e. opposite charges in the insulator are CLOSER to the external charges and there is a net attractive force.
- 7Coulomb's LawForce between 2 charges is given by
- 8Significance of coulomb's lawIt describes the force between two charges when they are at rest (electrostatics). This law gives the electrostatic force.
- 9Coulomb's Law for Multiple ChargesApply superposition: F1 = F21 + F31 + F41 and assume charges are at rest.
- 10F31The force exerted on Q3 by Q1
- 11When inputting Q values into Coulomb's Law or Electric Field, do you include positive and negative signs?NO. You do not. If it is negative, it will be positive in the equation. Sig is to allow Electric Field to reveal direction of the particle towards/away from the point charge
- 12Electric fieldCharge (Q) + Particle
- 13Electric Force (F)F = qE
F = force exerted on a charge q placed in the Electric field Q
q = point charge
E = Electric Field - 14q = positive versus q= negativeq = postive means Electric Field (E) and Electric Force (F) move in the same direction
q= negative means Electric Field (E) and Electric Force (F) move in opposite directions. - 15When Electric Field is in components of vector form , how do you find the direction?Tan (ϴ) = E(y)/E(x)
- 16When the Electric Field does not have x and y components, how do you find the direction?The positive or negative sign of the result gives the direction.
EX: if E = + and q = - then Electric field points toward q. - 17—
Informações
- Descrição
- Electric Forces between two charges, Electric fields plus eccentric Forces applied by the the electric field (charge + particle)
- Criado por
- Nancy Ruano
- Visualizações
- 5
- Avaliação