A plane EM wave is propagating along x direction. It has a wavelength of 4 mm . If electric field is in y direction with the maximum magnitude of 60 Vm − 1 , the equation for magnetic field is :

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E = BC ⇒ 60 = B × 3 × 1 0 8 ⇒ B = 2 × 1 0 − 7 Also C = f λ ​ ⇒ 3 × 1 0 8 = f × 4 × 1 0 − 3 ⇒ f = 4 3 ​ × 1 0 11 ⇒ ω = 2 π f = 4 3 ​ × 2 π × 1 0 11 ⇒ ω = 2 π ​ × 1 0 3 C ​ ⇒ Electric field ⇒ y direction Propagation ⇒ x direction Magnetic field ⇒ z -direction

Physics - EM Waves Question with Solution | TestHub

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