A steady electric current is flowing through a cylindrical conductor.
(a) The electric field at the axis of the conductor is zero.
(b) The magnetic field at the axis of the conductor is zero.
(c) The electric field in the vicinity of the conductor is zero.
(d) The magnetic field in the vicinity of the conductor is zero.
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Answer:
the correct answer for your question is option b
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A steady electric current is flowing through a cylindrical conductor, then
(b) The magnetic field at the axis of the conductor is zero.
(c) The electric field in the vicinity of the conductor is zero.
Therefore the correct answer is Option (b) and (c)
Explanation:
As the current flows across a conductor, it is distributed in the Longitude of the cylindrical conductor only on the conductor's surface. It is equivalent to charging distribution on a cylindrical sheet for which there is always zero electric field inside a conductive cylindrical sheet.
Magnetic fields at a certain point within the conductive cylinder are proportional to the range from the cylinder direction.
R = 0, and so no area to enclose the current.
Hence, B=0 at the axis of the conductor.
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