In Deriving the Axial Electric Field for the Ring-Shaped Charge

question 97

Multiple Choice

In deriving the axial electric field for the ring-shaped charge distribution and the electric field from a long line of charge, the component perpendicular to the resulting field is zero because of what physical property?

• A)only net charge is important
• B)positive and negative charges cancel
• C)superposition
• D)integration
• E)symmetry

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