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An E&M wave has an e-field g known to be 20 micrometers.

An E&M wave has an e-field g known to be 20 micrometers.

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An E&M wave has an e-field given by E(x, t) = -(9.90V/m)k cos(ky + wt) and its wavelength is known to be 20 micrometers. Which of the following is correct for B(x, t) and the direction of propagation? (c = 3x10° m/s) B(x, t) = -(0.165 µA)î cos (4.6 x 106 rad/m)y + (9.42 × 1013 rad/s)t),y B(x,t) = (33.0 nT)j cos ((6.28 x 105 rad/m)y + (2.78 × 1013 rad/s)t),–x B(x,t) = (33.0 nT)i cos ((3.14 x 105 rad/m)y + (9.42 × 1013 rad/, I. II. I. B(x, t) = (11.5 µT)î cos ((4.6 x 102 rad/m)y +(1.38 × 1013 rad/ ,)e), –y. IV. II II None of the above O IV
Transcribed Image Text:An E&M wave has an e-field given by E(x, t) = -(9.90V/m)k cos(ky + wt) and its wavelength is known to be 20 micrometers. Which of the following is correct for B(x, t) and the direction of propagation? (c = 3x10° m/s) B(x, t) = -(0.165 µA)î cos (4.6 x 106 rad/m)y + (9.42 × 1013 rad/s)t),y B(x,t) = (33.0 nT)j cos ((6.28 x 105 rad/m)y + (2.78 × 1013 rad/s)t),–x B(x,t) = (33.0 nT)i cos ((3.14 x 105 rad/m)y + (9.42 × 1013 rad/, I. II. I. B(x, t) = (11.5 µT)î cos ((4.6 x 102 rad/m)y +(1.38 × 1013 rad/ ,)e), –y. IV. II II None of the above O IV
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