1.

If the magnetic field of a plane electromagentic wave is given by (The speed of light = 3 × 108 m/s) B = 100 × 10–6 sin [2π x 2 x 1015(t - x/c)], then the maximum electric field associated with it is : (1) 4 × 104 N/C (2) 3 × 104 N/C (3) 6 × 104 N/C (4) 4.5 × 104 N/C

Answer»

Correct option: (2) 3 × 104 N/C

Explanation: 

E = CB

E = 3 × 108 × 100 × 10–6 = 3 × 104 N/C



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