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Test: Magnetostatics- 2 - Question 1

A circular conductor of 1 cm radius has an internal magnetic field

where , r_{0} is the radius of the conductor and is the unit vector. The total current in the conductor is given by

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Test: Magnetostatics- 2 - Question 2

What is the value of mutual inductance between an infinitely long straight conductor along the y-axis and a rectangular single turn coil situated in x-y plane with its corners located at point (a, 0), (a + d, 0), (a, h) and (a + d, h) as shown in figure below?

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Test: Magnetostatics- 2 - Question 3

Assertion (A): The force acting between two parallel wires carrying currents is directly proportional to the individual currents and inversely proportional to the square of the distance between them,

Reason (R): The force is repulsive if the two currents I_{1} and I_{2} are in the same directions and attractive if in opposite directions.

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Test: Magnetostatics- 2 - Question 8

Consider the volume current density distribution in cylindrical co-ordinates as

Where a and b are inner and outer radii of the cylinder as shown in figure below

Now, consider the value of magnetic field intensity in various regions I, II and III respectively obtained as:

Which of the above found values of H are correct for the respective regions?

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Test: Magnetostatics- 2 - Question 9

Assertion (A): It is not possible to have isolated magnetic charges.

Reason (R): The magnetic flux lines always close upon themselves.

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Test: Magnetostatics- 2 - Question 10

Match List-l with List-lI and select the correct answer using the codes given below the fists:

List-l

A. Gauss’s law for magnetostatic fields

B. Gauss’s law for electrostatic fields

C. Conservativeness of electrostatic fields

D. Ampere's law

List-lI

Codes:

A B C D

(a) 5 4 1 2

(b) 3 1 4 5

(c) 3 4 1 5

(d) 5 1 4 2

Test: Magnetostatics- 2 - Question 11

The magnetic vector potential is given by

The total magnetic flux crossing the surface ϕ = π/2 , 1 ≤ ρ ≤ 2 m , 0 ≤ z ≤ 5 m is

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Test: Magnetostatics- 2 - Question 12

Which of the following is not a source of magnetostatic fields?

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Test: Magnetostatics- 2 - Question 13

Consider the following statements associated with the characteristics of static magnetic field:

1. It is solenoidal.

2. Magnetic flux lines are not closed in certain cases.

3. The total number of flux lines entering a given region is equal to the total number of flux lines leaving the region.

4. It is conservative.

Which of the above statements is/are not correct?

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Test: Magnetostatics- 2 - Question 14

What are the units for the product of two values whose respective units are Henrys and Amperes?

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Test: Magnetostatics- 2 - Question 15

What are the possible dimensions for a rectangular coil that has a magnetic flux of 9.5 webers when in a magnetic field of strength 19 Tesla at an angle of 60° from the perpendicular to the plane of the coil?

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Test: Magnetostatics- 2 - Question 16

What is the change in magnetic fiux in a coil of area 5 m^{2} as its orientation relative to the perpendicular of a uniform 3.0 T magnetic field changes from 45° to 90°?

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Test: Magnetostatics- 2 - Question 18

If , the value of around the closed circular quadrant shown in the given figure is

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Test: Magnetostatics- 2 - Question 20

Given a vector field in cylindrical coordinates. For the contour as shown below, is

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