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20 August, 19:07

A normal human heart, beating about once per second, creates a maximum 4.00 mV 4.00 mV potential across 0.250 m 0.250 m of a person's chest, producing a 1.00 Hz 1.00 Hz electromagnetic wave. What is the maximum electric field strength produced? maximum electric field strength: V / m V/m What is the corresponding maximum magnetic field strength in the electromagnetic wave? maximum magnetic field strength: T T What is the wavelength of the electromagnetic wave?

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  1. 20 August, 19:53
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    1) maximum electric field strength = 0.016 V/m

    2) maximum magnetic field strength = 5.33 x 10^ (-11) T

    3) wavelength = 3 x 10^ (8) m

    Explanation:

    A) We are given;

    Frequency (f) = 1 Hz

    Maximum Potential ΔV = 4 mV = 4 x 10^ (-3) V

    Length; d = 0.25 m

    Now, maximum potential formula is given as;

    ΔV = E_o•d

    Where E_o is maximum electric field strength.

    Thus,

    E_o = ΔV/d = (4 x 10^ (-3)) / 0.25 = 0.016 V/m

    B) The maximum magnetic field strength is given by;

    B_o = E_o/c

    Where;

    c is speed of light = 3 x 10^ (8)

    B_o is maximum magnetic field strength

    Thus,

    B_o = 0.016 / (3 x 10^ (8)) = 5.33 x 10^ (-11) T

    C) Speed of any electromagnetic wave is given by;

    c = fλ

    Where;

    f is frequency

    λ is wavelength

    c is speed of light = 3 x 10^ (8)

    Thus, making λ the subject,

    λ = c/f

    λ = (3 x 10^ (8)) / 1 = 3 x 10^ (8) m
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