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A plane electromagnetic wave of frequency 500 MHz is travelling in vacuum along y – direction. At a particular point in space and time, B→=8.0×10−8z^T . The value of electric field at this point is:(Speed of light =3×108ms−1)x^, y^, z^ are unit vectors along x, y and z directions.

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a

−24 x^ V/m

b

2.6 x^V/m

c

−2.6 x^V/m

d

24x^V/m

answer is A.

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Detailed Solution

C=EB⇒E=CB=3×108×8×10−8=24V/m Direction of (B^×C^) is direction of E^ , ⇒E^=(B^×C^)=z^×y^=−x^

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A plane electromagnetic wave of frequency 500 MHz is travelling in vacuum along y – direction. At a particular point in space and time, B→=8.0×10−8z^T . The value of electric field at this point is:(Speed of light =3×108ms−1)x^, y^, z^ are unit vectors along x, y and z directions.