Lect-1+%26+2 - Chapter 25 Electric Charges and Forces...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 25 Electric Charges and Forces Section # 4,5,6 Introduction ¾ Electricity is about the long-range interactions of charges, for both static charges and moving charges. ¾ Using the concept of field will help us understand how these interactions take place. ¾ Much of our attention will be focused on the interplay b/w charges and fields. ¾ Mainly on how fields are created by charges and how charges in return respond to the fields. ± These concepts will allow us to understand, explain, and predict a wide range of behaviours.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
only when the objects touch • There are two types of materials with different electric properties. We call these “ Conductors” and “ insulators”. •In conductors , charge moves through or along the metal rod . can be charged, but the •In insulators , charge remains fixed in place on a plastic rod. mobility of charges are different ¾ In Insulators : the electrons are all tightly bound to the positive nuclei and not free to move. ¾ In Conductors : the outer atomic electrons are weakly bound to the nuclei. The weakly bound electrons form what is called a “ sea of electrons” around the positively charged “ ion cores”. But as a whole the metal remains electrically neutral, because no electrons added or removed. ¾ The law of conservation of charge • Charge is neither created nor destroyed. Charge can transferred from one object to another. ¾
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/21/2009 for the course PHY A10 taught by Professor Tawfiq during the Fall '08 term at University of Toronto.

Page1 / 7

Lect-1+%26+2 - Chapter 25 Electric Charges and Forces...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online