Energy, Environment, and Industrial Development. Michael B. McElroy Frederick H. Abernathy Lecture 16 April 10, 2006. An atom in its normal state is electrically neutral. If it loses an electron, it assumes a positive charge and is known as a positive ion.
Michael B. McElroy
Frederick H. Abernathy
April 10, 2006
N Nm2C-2 C2 m-2
ΔW < 0 Vb – Va < 0
Vb < Va
R = r L/A
where r, known as the resistivity, is a property of the medium
P = IV = I (RI) = I2R
Figure A1.8 of charge from a
Figure A1.9 continuous input of energy. This is referred to as a
Figure A1.10 electric field but also due to the magnetic field
Here R defines the separation of the wires
For a circular path the strength of the magnetic field produced by a current
where n is the number of loops of wire per unit length of the solenoid
Figure A1.16 (1791-1841) states that
If number of turns in secondary circuit is larger than in primary, voltage is increased.
If smaller, voltage is decreased.
Step-up or step-down transformer