The electric field on the surface of a perfect conductor is 2 V/m. The conductor is immersed in water with ∈ = 80 ∈₀. The surface charge density on the conductor is $$\left( { \in = \frac{{{{10}^{ - 9}}}}{{36\pi }}} \right){\text{F/m}}$$

A. Radar B. Direction finding C. Satellite communication D. All of the above

A. Scalar B. Vector C. Unit vector D. None of the above

A. Hertz antenna B. Marconi antenna C. Folded dipole D. None of the above

A. Accelerating B. Retardation C. Oscillating D. Lagging the current