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Q.

A plane electromagnetic wave of frequency 25 GHz is propagating in vacuum along the z-direction. At a particular point in space and time, the magnetic field is given by B→=5x10-8j^ T . The corresponding electric field E→ is (speed of light c=3x108ms−1 )

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a

−1.66x10−16i^ V/m

b

1.66x10−16i^ V/m

c

−15i^ V/m

d

15i^ V/m

answer is D.

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Detailed Solution

We know, E→=B→C =5×10−8×3×108=15 V/mdirection of wave propagation is along z axis and direction of magnetic field is along y axis,Therefore, direction of electric field is along x axis∴E→=15i∧ V/m

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A plane electromagnetic wave of frequency 25 GHz is propagating in vacuum along the z-direction. At a particular point in space and time, the magnetic field is given by B→=5x10-8j^ T . The corresponding electric field E→ is (speed of light c=3x108ms−1 )