(a)
The alignment of axis of coil.
(a)
Answer to Problem 86P
The alignment of axis of coil has to be with magnetic field.
Explanation of Solution
For the best result of magnetic dipole antenna which is used to detect
The alignment of axis of coil has to be with magnetic field so that the total magnetic flux in the coil will be the maximum.
(b)
The amplitude of the induced emf in the coil.
(b)
Answer to Problem 86P
The amplitude of the induced emf in the coil is
Explanation of Solution
Write the expression for Faraday’s law.
Here,
Write the expression to find the maximum magnetic flux.
Here,
Substitute equation (II) in (I) to find the amplitude of the induced emf in the coil.
Consider that field is sinusoidal.
Write the expression to find the magnetic field.
Here,
Substitute equation (IV) in (III) to find the induced emf in the coil.
Re-write the expression considering the maximum value of
Conclusion:
Substitute
(c)
The amplitude of emf induced in an electric dipole antenna.
(c)
Answer to Problem 86P
The amplitude of emf induced in an electric dipole antenna is
Explanation of Solution
Write the expression to find the amplitude of emf induced in an electric dipole antenna.
Here,
Conclusion:
Substitute
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