Question

Unit of electric flux is :

• A. Nm\(^2\)C
• B. Nm\(^2\)C\(^{-1}\)
• C. Vm\(^{-1}\)
• D. NmC\(^{-2}\)

Hint:

The unit of electric flux is \( \text{Nm}^2C^{-1} \), as it is the product of electric field and area.

Answer 1

The Correct Option is B

Step 1: Definition of Electric Flux.
Electric flux is defined as the product of electric field \( E \) and the area \( A \) through which the field lines pass, i.e., \( \Phi_E = E \times A \).
The unit of electric field is \( N/C \) (Newton per Coulomb) and area is measured in \( m^2 \), so the unit of electric flux becomes \( N \cdot m^2 \cdot C^{-1} \), which is equivalent to \( \text{Nm}^2C^{-1} \).

Step 2: Conclusion.
Hence, the correct unit of electric flux is \( \text{Nm}^2C^{-1} \), corresponding to option .