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1
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

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.

A
Both Statement I and Statement II are correct
B
Both Statement I and Statement II are incorrect
C
Statement I is correct and Statement II is incorrect
D
Statement I is incorrect and Statement II is correct
2
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

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

A
Uniform and remains constant for both the regions.
B
A linearly increasing function of distance upto the boundary of the wire and then linearly decreasing for the outside region.
C
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.
D
A linearly decreasing function of distance upto the boundary of the wire and then a linearly increasing one of the outside region.
3
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Change Language
A thick current carrying cable of radius 'R' carries current 'I' uniformly distributed across its cross section. The variation of magnetic field B(r) due to the cable with the distance 'r' from the axis of the cable is represented by :
A
NEET 2021 Physics - Moving Charges and Magnetism Question 15 English Option 1
B
NEET 2021 Physics - Moving Charges and Magnetism Question 15 English Option 2
C
NEET 2021 Physics - Moving Charges and Magnetism Question 15 English Option 3
D
NEET 2021 Physics - Moving Charges and Magnetism Question 15 English Option 4
4
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Change Language
An infinitely long straight conductor carries a current of 5A as shown. An electron is moving with a speed of 105 m/s parallel to the conductor. The perpendicular distance between the electron and the conductor is 20cm at an instant. Calculate the magnitude of the force experienced by the electron at that instant.

NEET 2021 Physics - Moving Charges and Magnetism Question 14 English
A
8 $$\times$$ 10$$-$$20 N
B
4 $$\times$$ 10$$-$$20 N
C
8$$\pi$$ $$\times$$ 10$$-$$20 N
D
4$$\pi$$ $$\times$$ 10$$-$$20 N
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