A low-frequency radio wave is oscillating at a rate of 60 MHz with a peak electric field of 120 N/C. Which of the following functions is the correct excpression for the magnetic field? а. 2л B (x,t) =40µTsin -(1.2x)(108)t b. 2л В (х,1) %3D0.40иTsin| 5 (1.2×)(10º)- 2л С. B (x,t) =4.0µTsin (1.2) ( O d. B (x,t) =0.40µTsin x- (1.0) (108): е. B (x,t) =0.40µTsin - (1.2) (10°),

A low-frequency radio wave is oscillating at a rate of 60 MHz with a peak electric field of 120 N/C. Which of the following functions is the correct excpression for the magnetic field? а. 2л B (x,t) =40µTsin -(1.2x)(108)t b. 2л В (х,1) %3D0.40иTsin| 5 (1.2×)(10º)- 2л С. B (x,t) =4.0µTsin (1.2) ( O d. B (x,t) =0.40µTsin x- (1.0) (108): е. B (x,t) =0.40µTsin - (1.2) (10°),