Correct Answer - Option 2 : Volt meter
CONCEPT:
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Flux is a total electric field that passes through the given area.
If we choose a simple surface with area A, the electric flux is:
\(ϕ=\oint \overrightarrow{E}.\overrightarrow{dA}\)
where ϕ is the flux, E is the electric field, and dA is the small area.
CALCULATION:
The unit of the electric field is Volt/meter.
Since \(ϕ=\oint \overrightarrow{E}.\overrightarrow{dA}\)
So the unit of ϕ = Unit of E × unit of A
The unit of ϕ = Volt/meter × meter2
Unit of ϕ = Volt-meter
Hence the correct answer is option 2.
