(a)The magnetic field intensity H of an electromagnetic wave propagating infree space in the z-direction is described in phasor form by H = îH¸e¯iwhere B is its phase constant. Determine the corresponding electric field fromAmpere's law.A long straight wire in air carries a current of 5 A. What is the magnetic fieldintensity H at a radial distance of 5 m from the wire?(b)A battery of open circuit voltage 2 V and internal resistance 50 2 is connectedvia a rapid switch to a transmission line of characteristic impedance 50 Nterminated in a load of 100 N. Calculate the voltage and current on the linejust after the switch is closed, explaining your answer carefully.(c)

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The magnetic field intensity H of an electromagnetic wave propagating in free space in the z-direction is described in phasor form by H = &H,e¯j where B is its phase constant. Determine the corresponding electric field from Ampere's law.