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← ScienceWhich outcome arises when applying a high electric field to an ionic crystal near its dielectric breakdown strength?
A)Increased ionic conductivity via hopping✓
B)Decreased electron mobility from collision
C)Spontaneous current reversal at electrodes
D)Formation of Cooper pairs and superconductivity
💡 Explanation
When a high electric field is applied to an ionic crystal, increased ionic conductivity occurs because the increased field lowers the activation energy required for ions to hop between lattice sites, leading to increased ion movement. Therefore, hopping conductivity dominates, rather than decreased mobility, reversal, or superconductivity which require alternative mechanisms.
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