If the Magnetic Field in a Plane Electromagnetic Wave Is

question 41

Multiple Choice

If the magnetic field in a plane electromagnetic wave is along the y axis and its magnitude is given by B_m sin (kx - **t) in SI units, then the electric field is along the z axis and its magnitude is given by

• A)(cB_m)cos (kx - *t)
• B)-(cB_m)cos (kx - *t)
• C)(cB_m)sin (kx - *t)
• D)-(cB_m)sin (kx - t)
• E)B_m cos (kx - t)

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