A plane electromagnetic wave of frequency $28 M H z$ travels in free space along the positive x-direction. At a particular point in space and time, electric field is $9.3 V / m$ along positive y-direction. The magnetic field (in T) at that point is

3.1 \times 10^{- 8}

along positive z-direction

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3.1 \times 10^{- 8}

along negative z-direction

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3.2 \times 10^{7}

along positive z-direction

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3.2 \times 10^{7}

along negative z-direction

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Solution

The correct option is A $3.1 \times 10^{- 8}$ along positive z-direction
$B = \frac{E}{C} = \frac{9.3}{3 \times 10^{8}} = 3.1 \times 10^{-} 8$

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A plane electromagnetic wave of frequency 28MHz travels in free space along the positive x-direction. At a particular point in space and time, electric field is 9.3V/m along positive y-direction. The magnetic field (in T) at that point is

The correct option is A 3.1×10−8 along positive z-directionB=EC=9.33×108=3.1×10−8

A plane electromagnetic wave of frequency $28 M H z$ travels in free space along the positive x-direction. At a particular point in space and time, electric field is $9.3 V / m$ along positive y-direction. The magnetic field (in T) at that point is

The correct option is A $3.1 \times 10^{- 8}$ along positive z-direction
$B = \frac{E}{C} = \frac{9.3}{3 \times 10^{8}} = 3.1 \times 10^{-} 8$