Practice question
Question
What explains why the electric field outside a neutral object can be non-zero when placed in an
external field?
Explanation
**Interaction of dipole with uniform field** produces pure couple without net force, equal opposite forces forming torque. Potential energy minimum -pE at alignment, maximum +pE at anti-alignment, governing orientation dynamics. Induced charge separation occurs in a neutral object under an external field, creating dipoles or surface charges. These induced charges produce their own field, which adds to the external field, resulting in a non-zero total field outside. Substituting values gives Induced charge separation, which matches expected magnitude for this electrostatic configuration, confirming Coulomb's and Gauss's principles and charge quantization consistency.
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