Question

Which of the following is the unit of electric flux?

• A. \text{volt × second}
• B. \text{volt × metre}
• C. \text{coulomb × second}
• D. \text{coulomb × metre}

Hint:

Remember that electric flux is the product of electric field strength and surface area, leading to the unit \( \text{volt} \times \text{metre} \).

Answer 1

The Correct Option is B

Step 1: Electric flux is given by the formula: \[ \Phi_E = \mathbf{E} \cdot \mathbf{A} \] Step 2: The unit of electric field \( E \) is volt per metre (\( V/m \)), and the unit of area \( A \) is metre squared (\( m^2 \)). \[ \text{Unit of flux} = \left( \frac{\text{volt}}{\text{metre}} \right) \times \text{metre}^2 = \text{volt} \times \text{metre} \] \[ \therefore \text{The correct answer is } \text{volt × metre.} \] \[ \boxed{\text{volt × metre}} \]