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| Numerical 06 |
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| 06. Calculate the potential at P due to the charge configuration shown in the figure. If r>>a, then how will you modify the result? |
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| Suggested answer: |
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| The potential at P due to the given charge configuration is the sum of the potentials due to charges -q, +q and +q. These charges are at distances r + a, r and r - a respectively from the point P. |
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| If r>> a, then r2- a2= r2 |
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| Note: When r>>a, the potential at P is simply the potential of a dipole and an isolated charge at distance r. |
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