| Both sides previous revision Previous revision | |
| 184_notes:examples:week2_electric_potential_negative_point [2018/02/03 21:15] – tallpaul | 184_notes:examples:week2_electric_potential_negative_point [2018/05/17 16:49] (current) – curdemma |
|---|
| | [[184_notes:pc_potential|Return to Electric Potential]] |
| ===== Example: Electric Potential from a Negatively Charged Balloon ===== | ===== Example: Electric Potential from a Negatively Charged Balloon ===== |
| Suppose we have a negatively charged balloon with total charge Q=−5.0⋅10−9 C. What is the electric potential (also called voltage) at a point P, which is a distance R=20 m from the center of the balloon? | Suppose we have a negatively charged balloon with total charge Q=−5.0⋅10−9 C. What is the electric potential (also called voltage) at a point P, which is a distance R=20 m from the center of the balloon? |
| We assume P lies outside of the balloon. This is obvious, as P is a distance R=20 m away from the center of the balloon. | We assume P lies outside of the balloon. This is obvious, as P is a distance R=20 m away from the center of the balloon. |
| </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=== |