A charge of 12 pC is placed at a distance of I0 cm directly above the centre of a square of side 20 cm. What is the magnitude of electric flux through the square?

• A

  $0.225\frac{\mathrm{N}}{\mathrm{C}}{\mathrm{m}}^2$

• B

  $2.70 \mathrm{x} {10}^2 \frac{\mathrm{N}}{\mathrm{C}}{\mathrm{m}}^2$

• C

  $1.35\frac{{\mathrm{Nm}}^2}{\mathrm{C}}$

• D

  $0.225 \mathrm{x} {10}^{-2} \frac{{\mathrm{Nm}}^2}{\mathrm{C}}$