Ch. 20 Static Electricity Ch. 21 Electric Fields Ch. 22 Current Electricity.
Post on 30-Dec-2015
ELECTRICITYCh. 20 Static ElectricityCh. 21 Electric FieldsCh. 22 Current ElectricityStatic ElectricityMost things are neutral..But electrons can be transferred causing a charge to occur temporarily.Opposites attract and Likes repel More surface area, more electrons exposedLack electrons=+Excess electrons= -
Conductors-electrons move easilyInsulators-electrons do not move easily
Charging by Induction-charging over distanceGrounding-connecting to Earth to rid of excess electronsCharging by Conduction-charging by touchingElectroscopeStronger when closer
Coulombs LawForce depends on DistanceForce depends on ChargeUnit of charge-CoulombElectron: 1.60 x 10-19 C1 C=6.24 x 1018 electrons or protons
K=9.0x 109 Nm2/C2PracticeSphere A, with a charge of +6.0 microC is located near another charge sphere B. Sphere B has a charge of -3 microC and is located 4.0 cm to the right of AA. What is the force of B on A:
100 NB. A third sphere C, with a +1.5 microC charge, is added to the configuration. If it is located 3.0 cm directly beneath A, what is the new net force on sphere A?
130 N, 42 degrees SWELECTRIC FIELDS CH. 21E=F on q/q2