Find the electric field of an electromagnetic wave if the magnetic field is B=2cos(10¹ +- Bx) = (a) Ē=-26c² cos(10¹t-ßx)ŷ (b) Ē= 2Bc² cos(10¹t+ Bx) y (c) Ē=2Bc² -sin (10¹t-Bx) y (d) Ē=2c²cos (10¹ºt - Bx)ŷ
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