Electric Potential Lesson - showmethephysics.com
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YouTube Channel
Lightning over the Icelandic volcano 2010
NASA
G) Electric Field - region in space where electric forces act on charges
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"Did you know that sharks can 'see' electric fields?" |
School Blocks YouTube? Use file below.
Electroreception (right click, save as)
A bonnethead shark biting actively and vigorously at various electric dipoles while ignoring the live fish swimming around with it.
Dr. Stephen M. Kajiura, Elasmobranch Research Lab, Boca Raton, FL
1) Vector Quantity
2) E = F/q (on reference)
E = Electric Field Strength
(N/C)
q = amount of charge
F = force on charge
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AP Physics B Giancoli p. 466) 31 E = F/q = ma/q
E = F/q = Kq/r2 33)
Corner charges cancel out E = F/q = Kq/r2
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3) The direction of an electric field is drawn to show how the field acts on positive charge (Decided by convention)
Positive Spherical Charges Repel Positives
Outward in
all Directions
Negative Spherical Charges Drawn Positives
In Toward
the Center of the Charge
Electric Field Patterns
Spherical Charges
| a) positive charge | b) negative charge |
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| ou+ | in |
Radial Fields
Field at the
center of a charge
= zero
What is the charge below - Negative, Positive or Neutral?
Physics Animations - Pelletier Physics' Channel
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c) 2 opposite charges |
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3 Dimensional View
Physics Animations Pelletier Physics' Channel
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d) 2 like charges |
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e) Field between a positive and neutral charge
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Which charge is positive? |
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f) Field Lines between opposite charged parallel plates
** Field between plates is uniform
- (same strength all over)
Review
Identify the incorrect choices below.
Justify each choice
June 2013
Name the charges.
June 2016
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