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| 184_notes:examples:week2_electric_potential_positive_point [2018/01/24 17:43] – [Solution] tallpaul | 184_notes:examples:week2_electric_potential_positive_point [2018/02/03 21:15] – tallpaul | ||
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| - | ===== Electric Potential from a Positively Charged Balloon ===== | + | ===== Example: |
| Suppose we have a positively charged balloon with total charge $Q=5.0\cdot 10^{-9} \text{ C}$. What is the electric potential (also called voltage) at a point $P$, which is a distance $R=50 \text{ cm}$ from the center of the balloon? | Suppose we have a positively charged balloon with total charge $Q=5.0\cdot 10^{-9} \text{ C}$. What is the electric potential (also called voltage) at a point $P$, which is a distance $R=50 \text{ cm}$ from the center of the balloon? | ||
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| <WRAP TIP> | <WRAP TIP> | ||
| === Assumption === | === Assumption === | ||
| - | The electric potential infinitely far away from the balloon is $0 \text{ V}$. /*Read [184_notes: | + | The electric potential infinitely far away from the balloon is $0 \text{ V}$. Read [[184_notes: |
| </ | </ | ||