pp25 - PHYSICS: A World View Thursday, 21 April 2005 READ...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
PHYSICS: A World View Thursday, 21 April 2005 READ Ch 21 (pp 446-451) PRAC Ch 21: Q 33, 43, 45, 49, 53 HW #25 Ch 21: Q 28, 32, 38, 48 Tu 26 Apr LAB #21 Batteries and Bulbs II Pre = 1
Background image of page 1

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

View Full DocumentRight Arrow Icon
QUIZ #3 0 2 4 6 8 10 12 < 2 4 8 3 6 0 Ave = 35/40 = 88%
Background image of page 2
Consider a simple circuit What if we increase the push? more push means more flow What if we change the bulb? not all identical pushes produce identical  flows
Background image of page 3

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

View Full DocumentRight Arrow Icon
Resistance. .. Resistance. .. is futile is futile QuickTime™ and a GIF decompressor are needed to see this picture.
Background image of page 4
Resistance Represents the ability of a circuit element  to impede the flow of current. R =  V element /I element volt/ampere = ohm   Georg S. Ohm (1789-1854) Constant R   ”ohmic” V = I R
Background image of page 5

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

View Full DocumentRight Arrow Icon
Which has more resistance? steel wood
Background image of page 6
Which has more resistance? steel steel
Background image of page 7

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

View Full DocumentRight Arrow Icon
steel
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 36

pp25 - PHYSICS: A World View Thursday, 21 April 2005 READ...

This preview shows document pages 1 - 9. Sign up to view the full document.

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