A plane electromagnetic wave of frequency 25 G H z is propagating in vacuum along the z-direction. At a particular point in space and time, the magnetic filed is given by B → = 5 × 10 - 8   j ^   T . The corresponding electric field E → is (speed of light = 3 × 10 8   m s - 1 )

Step-by-step solution

Given, the electromagnetic wave is propagating in z i.e., + k ^ direction. The relation between the magnitudes of electric field, magnetic field and the speed of light is given by E B = C ⇒   E = B × C ⇒   E = 5 × 10 - 8 × 3 × 10 8 = 15   V   m - 1 We know that the direction of propagation of electromagnetic wave is along E → × B → . So, E → = 15   i ^   V   m - 1