GATE EE 2022 | Magnetostatics Question 4 | Electromagnetic Fields

GATE EE 2022

MCQ (Single Correct Answer)

-0.33

A long conducting cylinder having a radius b is placed along the z-axis. The current density is $$\overrightarrow J = {J_a}{r^3}\widehat z$$ for the region r < b where r is the distance in the radial direction. The magnetic field intensity ($$\overrightarrow H $$) for the region inside the conductor (i.e., for r < b) is

$${{{J_a}} \over 4}{r^4}$$

$${{{J_a}} \over 3}{r^3}$$

$${{{J_a}} \over 5}{r^4}$$

$${J_a}{r^3}$$

GATE EE 2017 Set 2

MCQ (Single Correct Answer)

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The figures show diagrammatic representations of vector fields $$\overrightarrow X,\;\overrightarrow Y,\;and\;\overrightarrow Z$$ respectively. Which one of the following choices is true? GATE EE 2017 Set 2 Electromagnetic Fields - Magnetostatics Question 26 English

GATE EE 2017 Set 2 Electromagnetic Fields - Magnetostatics Question 26 English

$$\nabla.\overrightarrow X\;=\;0,\;\nabla\times\overrightarrow Y\;\neq\;0,\;\nabla\times\overrightarrow Z\;=\;0$$

$$\nabla.\overrightarrow X\;\neq\;0,\;\nabla\times\overrightarrow Y\;=\;0,\;\nabla\times\overrightarrow Z\;\neq\;0$$

$$\nabla.\overrightarrow X\;\neq\;0,\;\nabla\times\overrightarrow Y\;\neq\;0,\;\nabla\times\overrightarrow Z\;\neq\;0$$

$$\nabla.\overrightarrow X\;=\;0,\;\nabla\times\overrightarrow Y\;=\;0,\;\nabla\times\overrightarrow Z\;=\;0$$

GATE EE 2017 Set 1

MCQ (Single Correct Answer)

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A solid iron cylinder is placed in a region containing a uniform magnetic field such that the cylinder axis is parallel to the magnetic field direction. The magnetic field lines inside the cylinder will

bend closer to the cylinder axis

bend farther away from the axis

remain uniform as before

cease to exist inside the cylinder

GATE EE 2015 Set 1

MCQ (Single Correct Answer)

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A steady current I is flowing in the −x direction through each of two infinitely long wires at $$y=\pm\frac L2$$ as shown in the figure. The permeability of the medium is $$\mu_0$$. The $$\overrightarrow B$$ field at (0,L,0) is GATE EE 2015 Set 1 Electromagnetic Fields - Magnetostatics Question 24 English