phs102: introductory physics iii
DESCRIPTION
PHS102: INTRODUCTORY PHYSICS III. DR. A. O. ADEWALE. Course Outline: Electrostatics, potential and capacitance, dielectrics, production and measurement of static electricity. Current, Ohm’s law, resistance and resistivity, heating, Galvanometers, Voltmeters and Ammeters. - PowerPoint PPT PresentationTRANSCRIPT
DR. A. O. ADEWALE
Course Outline:Electrostatics, potential and capacitance, dielectrics, production and measurement of static electricity. Current, Ohm’s law, resistance and resistivity, heating, Galvanometers, Voltmeters and Ammeters.D.C. circuits, sources of emf and currents, Kirchhoff’s laws. Electrochemistry. The Earth’s magnetic fields and induction. Faraday’s and Lenz’s Laws. Force on a current carrying conductor. Biot-Savart law. Flemmings right and left-hand rules, motors and generators.
Coulomb’s Law in vector formIn vector notation the Coulomb’s law can be
written as
where is the unit vector along r12
where εo = 8.85 x 10-12C2N-1m-2 = permittivity of free space
123
12
21122
12
2112 ˆ r
rr
rF
QkQQkQ
2291094
1 CNmko
21
21
12
1212ˆ rr
rr
r
rr
Example 1
Class Work