A steady current I flows along an infinitely long hollow cylindrical conductor of radius R. This cylinder is placed coaxially inside an infinite solenoid of radius 2R. The solenoid has n turns per unit length and carries a steady current I. Consider a point P at a distance r from the common axis. The correct statement (s) is (are)

Engineering

Physics

Magnetic Field

Amperes Circuital Law and its Applications

Question

A steady current I flows along an infinitely long hollow cylindrical conductor of radius R. This cylinder is placed coaxially inside an infinite solenoid of radius 2R. The solenoid has n turns per unit length and carries a steady current I. Consider a point P at a distance r from the common axis. The correct statement (s) is (are)

In the region 0 < r < R, the magnetic field is non-zero.

In the region R < r < 2R, the magnetic field is along the common axis.

In the region r > 2R, the magnetic field is non-zero.

In the region R< r < 2R, the magnetic field is tangential to the circle of radius r, centered on the axis.

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