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| 184_notes:superposition [2021/01/29 21:15] – bartonmo | 184_notes:superposition [2021/05/26 13:41] (current) – schram45 |
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| [{{ 184_notes:dipole_epoint.png?150|Electric field at a single point (Point P) due to a dipole}}] | [{{ 184_notes:dipole_epoint.png?150|Electric field at a single point (Point P) due to a dipole}}] |
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| [[184_notes:pc_efield|As you have learned]], the electric field from a single //positive charge// at any given point will point away from the charge, and the electric field at any given point from a //negative charge// will point toward the point charge. So what happens to the electric field when you have a positive charge next to a negative charge? The field at any point in space around the two charges will be given by a **net electric field**, which is the [[184_notes:math_review#vector_addition|vector addition]] of the electric field from the positive charge and the electric field from the negative charge. | [[184_notes:pc_efield|As you have learned]], the electric field from a single //positive charge// at any given point will point //away// from the charge, and the electric field at any given point from a //negative charge// will point //toward// the point charge. So what happens to the electric field when you have a positive charge next to a negative charge? The field at any point in space around the two charges will be given by a **net electric field**, which is the [[184_notes:math_review#vector_addition|vector addition]] of the electric field from the positive charge and the electric field from the negative charge. |
| $$\vec{E}_{net}=\vec{E}_{+}+\vec{E}_{-}$$ | $$\vec{E}_{net}=\vec{E}_{+}+\vec{E}_{-}$$ |
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| ==== Examples ==== | ==== Examples ==== |
| [[184_notes:examples:Week3_superposition_three_points|Superposition with Three Point Charges]] | * [[184_notes:examples:Week3_superposition_three_points|Superposition with Three Point Charges]] |
| | * Video Example: Superposition with Three Point Charges |
| [[184_notes:examples:Week3_plotting_potential|Plotting Potential for Multiple Charges]] | * [[184_notes:examples:Week3_plotting_potential|Plotting Potential for Multiple Charges]] |
| | {{youtube>2VLMLuL2N7s?large}} |