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If the electric potential is given, which of the following cannot be calculated?

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in Electromagnetic Theory by (188k points)
If the electric potential is given, which of the following cannot be calculated?

(a) Electrostatic energy

(b) Electric field intensity

(c) Electric flux density

(d) Permittivity

I had been asked this question during an online exam.

Query is from Electrostatic Energy topic in division Electrostatic Fields of Electromagnetic Theory

1 Answer

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Best answer
The correct answer is (a) Electrostatic energy

The explanation is: Using potential, we can calculate electric field directly by gradient operation. From E, the flux density D can also be calculated. Thus it is not possible to calculate energy directly from potential.

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