NEET 2022 Phase 2 | Moving Charges and Magnetism Question 8 | Physics

NEET 2022 Phase 2

MCQ (Single Correct Answer)

-1

The magnetic field on the axis of a circular loop of radius 100 cm carrying current $$I = \sqrt 2 \,A$$, at point 1 m away from the centre of the loop is given by :

$$6.28 \times {10^{ - 4}}$$ T

$$3.14 \times {10^{ - 7}}$$ T

$$6.28 \times {10^{ - 7}}$$ T

$$3.14 \times {10^{ - 4}}$$ T

NEET 2022 Phase 1

MCQ (Single Correct Answer)

-1

A long solenoid of radius 1 mm has 100 turns per mm. If 1 A current flows in the solenoid, the magnetic field strength at the centre of the solenoid is

6.28 $$\times$$ 10^$$-$$2 T

12.56 $$\times$$ 10^$$-$$2 T

12.56 $$\times$$ 10^$$-$$4 T

6.28 $$\times$$ 10^$$-$$4 T

NEET 2022 Phase 1

MCQ (Single Correct Answer)

-1

Given below are two statements:

Statement I : Biot-Savart's law gives us the expression for the magnetic field strength of an infinitesimal current element (Idl) of a current carrying conductor only.

Statement II : Biot-Savart's law is analogous to Coulomb's inverse square law of charge q, with the former being related to the field produced by a scalar source, Idl while the latter being produced by a vector source, q.

In light of above statements choose the most appropriate answer from the options given below.

Both Statement I and Statement II are correct

Both Statement I and Statement II are incorrect

Statement I is correct and Statement II is incorrect

Statement I is incorrect and Statement II is correct

NEET 2022 Phase 1

MCQ (Single Correct Answer)

-1

From Ampere's circuital law for a long straight wire of circular cross-section carrying a steady current, the variation of magnetic field in the inside and outside region of the wire is

Uniform and remains constant for both the regions.

A linearly increasing function of distance upto the boundary of the wire and then linearly decreasing for the outside region.

A linearly increasing function of distance r upto the boundary of the wire and then decreasing one with $${1 \over r}$$ dependence for the outside region.

A linearly decreasing function of distance upto the boundary of the wire and then a linearly increasing one of the outside region.

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