184_notes:examples:week2_electric_potential_positive_point

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184_notes:examples:week2_electric_potential_positive_point [2018/01/24 17:03] tallpaul184_notes:examples:week2_electric_potential_positive_point [2018/05/17 16:48] (current) curdemma
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-===== Electric Potential from a Positively Charged Balloon ===== +[[184_notes:pc_potential|Return to Electric Potential]] 
-Suppose we have a positively charged balloon with total charge Q=5109 C. What is the electric potential (also called voltage) at a point P, which is a distance R=50 cm from the center of the balloon?+===== Example: Electric Potential from a Positively Charged Balloon ===== 
 +Suppose we have a positively charged balloon with total charge $Q=5.0\cdot 10^{-9} \text{ C}.Whatistheelectricpotential(alsocalledvoltage)atapointP,whichisadistanceR=50 \text{ cm}$ from the center of the balloon?
  
 ===Facts=== ===Facts===
-  * The balloon has total charge Q=5109 C.+  * The balloon has total charge $Q=5.0\cdot 10^{-9} \text{ C}$.
   * The point P is a distance R=50 cm away from the center of the balloon.   * The point P is a distance R=50 cm away from the center of the balloon.
   * The electric potential due to a point charge can be written as V=14πϵ0qr, where q represents the charge and r is the distance.   * The electric potential due to a point charge can be written as V=14πϵ0qr, where q represents the charge and r is the distance.
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 </WRAP> </WRAP>
  
-{{ 184_notes:2_potential_positive_balloon.png?150 |Charged Balloon, and Point P}}+[{{ 184_notes:2_potential_positive_balloon.png?150 |Charged Balloon, and Point P}}]
  
 ===Goal=== ===Goal===
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 <WRAP TIP> <WRAP TIP>
 === Assumption === === Assumption ===
-The electric potential infinitely far away from the balloon is 0 V. Read [184_notes:superposition#Superposition_of_Electric_Potential|here]] for why this is important.+The electric potential infinitely far away from the balloon is 0 V. Read [[184_notes:superposition#Superposition_of_Electric_Potential|here]] for why this is important.
 </WRAP> </WRAP>
  
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  • Last modified: 2018/01/24 17:03
  • by tallpaul