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Electromagnetic TheoryElectric Field

The direction of electric field at a point is defined as the direction of force on a?

  • APositive test charge
  • BNegative test charge
  • CMagnetic north pole only
  • DCurrent element only
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Correct Answer: A. Positive test charge
Explanation: Electric-field direction is the force direction on a positive test charge.
Reference: Standard electromagnetic theory: electric field
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