For any E.M. wave if E = 100 V/m and the magnetising field is equal to 0.265 A/m. Then the rate of maximum energy flow per unit area is:

(1) $3.33\times {10}^{-5} J/m^2$

(2) 26.5 W/$m^2$

(3) $3\times {10}^8 J/m^2$

(4) None of these

A variable frequency AC source is connected to a capacitor. Then on increasing the frequency:

Source of an electromagnetic wave is

(1) A charge moving with constant velocity

(2) A charge at rest

(3) A charge moving in a circular orbit

(4) Charges cannot produce an EM wave

The dimension of E/H is that of 

(1) Impedance

(2) Inductance

(3) capacitance

(4) Inductance$\times$Capacitance

Poynting vector $\overrightarrow{P}$ for an EM wave is :

1. $\overrightarrow{P}=\overrightarrow{E}\times \overrightarrow{B}$

2. $\overrightarrow{P}=\overrightarrow{E}\times \overrightarrow{H}$

3. $\overrightarrow{P}=\frac{\overrightarrow{E}}{\overrightarrow{B}}$

4. $\overrightarrow{P}=\frac{\overrightarrow{E}}{\overrightarrow{H}}$

Which one statement is incorrect about the electromagnetic waves?

(1) $\overrightarrow{E}\times \overrightarrow{B}$ gives always the direction of propagation

(2) $\overrightarrow{E}$ is always perpendicular to $\overrightarrow{B}$

(3) Transverse in nature

(4) $\overrightarrow{E}$ is always parallel to $\overrightarrow{B}$

Instantaneous displacement current of 2.0 A is set up in the space between two parallel plates of \(1~\mu F\)$$ capacitor. The rate of change in potential difference across the capacitor is:

1. $3\times {10}^6$ $V/s$

2. $4\times {10}^6$ $V/s$

3. $2\times {10}^6$ $V/s$

4. None of these

Which statement is incorrect?

Displacement current is:

A radiowave has a maximum magnetic field induction of ${10}^{-4}$ T on arrival at a receiving antenna. The maximum electric field intensity of such a wave is

(1) zero

(2) $3\times {10}^4 V/m$

(3) $5.8\times {10}^{-9} V/m$

(4) $3.3\times {10}^{13 } V/m$