SI unit of electric flux is:
Correct answer: C. Nm2C-1
- A. NmC-1
- B. Nm-2C-2
- C. Nm2C-1
- D. Nm2C-2
Explanation
Electric flux is defined as the product of the electric field and the area through which the field lines pass. Therefore, its SI unit is Nm2C-1. Option C is correct because it reflects the formula for electric flux (Electric field × Area). Options A, B, and D do not correctly represent the units for electric flux. Option A represents electric field strength, Option B does not correspond to a known quantity, and Option D is incorrect as it suggests an incorrect relationship between the units.
This question appeared on the UHS MDCAT 2010 paper, which you can sit online with every answer explained.
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An electric field is the force experienced per unit positive test charge, with the field of a point charge given by E = kQ/r² and directed away from positive charges or toward negative charges. Questions involve field lines, superposition and force on a charge, while electric field must be distinguished from electric potential.
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