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.

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(a)
The magnetic field intensity H of an electromagnetic wave propagating in
free space in the z-direction is described in phasor form by H = îH¸e¯i
where B is its phase constant. Determine the corresponding electric field from
Ampere's law.
A long straight wire in air carries a current of 5 A. What is the magnetic field
intensity 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 connected
via a rapid switch to a transmission line of characteristic impedance 50 N
terminated in a load of 100 N. Calculate the voltage and current on the line
just after the switch is closed, explaining your answer carefully.
(c)
Transcribed Image Text:(a) The magnetic field intensity H of an electromagnetic wave propagating in free space in the z-direction is described in phasor form by H = îH¸e¯i where B is its phase constant. Determine the corresponding electric field from Ampere's law. A long straight wire in air carries a current of 5 A. What is the magnetic field intensity 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 connected via a rapid switch to a transmission line of characteristic impedance 50 N terminated in a load of 100 N. Calculate the voltage and current on the line just after the switch is closed, explaining your answer carefully. (c)
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