JEE Main20244 Apr 2024Morning ShiftPhysicsElectromagnetic WavesActual
The electric field in an electromagnetic wave is given by E = i 40 ( t -z / c ) NC ⁻¹ . The magnetic field induction of this wave is (in SI unit) :
Options
- AB = k 40 C ( t -z / c )
- BB = j 40 (t-z / c)
- CB = i 40 C ( t -z / c )
- DB = j 40 C ( t -z / c )
Correct answer
D. B = j 40 C ( t -z / c )
Step-by-step solution
E = i 40 ( t - z c ) E is along + x direction v is along + z direction So direction of B will be along +y and magnitude of B will be E c So answer is 40 c (t- z c ) j