Physics Electrostatics Potential & Capacitance JEE Main 2025 - ( Electrostatics ) MCQ (Single Correct)

If denotes the permittivity of free space and is the flux of the electric field through the area bounded by the closed surface, then dimensions of ( ) are that of:

A
electric charge
B
electric field
C
electric current
D
electric potential

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Verified by Experts
The correct answer is:
C

We can use Gauss's law to analyze the dimensions. Gauss's law states that
,
where
is the electric flux,
q is the electric charge,
is the permittivity of free space.
To find the dimensions of , follow these steps:

Differentiate Gauss's law with respect to time:

Multiply the equation by :

Recognize that the time rate of change of charge, , is by definition the electric current.

Thus, the dimensions of are those of electric current.

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