1
JEE Main 2023 (Online) 11th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

An electron is allowed to move with constant velocity along the axis of current carrying straight solenoid.

A. The electron will experience magnetic force along the axis of the solenoid.

B. The electron will not experience magnetic force.

C. The electron will continue to move along the axis of the solenoid.

D. The electron will be accelerated along the axis of the solenoid.

E. The electron will follow parabolic path-inside the solenoid.

Choose the correct answer from the options given below:

A
B, C and D only
B
B and C only
C
A and D only
D
B and E only
2
JEE Main 2023 (Online) 8th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A charge particle moving in magnetic field B, has the components of velocity along B as well as perpendicular to B. The path of the charge particle will be

A
helical path with the axis along magnetic field $$\mathrm{B}$$
B
straight along the direction of magnetic field $$\mathrm{B}$$
C
circular path
D
helical path with the axis perpendicular to the direction of magnetic field B
3
JEE Main 2023 (Online) 6th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A long straight wire of circular cross-section (radius a) is carrying steady current I. The current I is uniformly distributed across this cross-section. The magnetic field is

A
uniform in the region $$r < a$$ and inversely proportional to distance $$r$$ from the axis, in the region $$r > a$$
B
zero in the region $$r < a$$ and inversely proportional to $$r$$ in the region $$r > a$$
C
directly proportional to $$r$$ in the region $$r < a$$ and inversely proportional to $$r$$ in the region $$r > a$$
D
inversely proportional to $$r$$ in the region $$r < a$$ and uniform throughout in the region $$r > a$$
4
JEE Main 2023 (Online) 1st February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

As shown in the figure, a long straight conductor with semicircular arc of radius $$\frac{\pi}{10}$$m is carrying current $$\mathrm{I=3A}$$. The magnitude of the magnetic field, at the center O of the arc is :

(The permeability of the vacuum $$=4\pi\times10^{-7}~\mathrm{NA}^{-2}$$)

JEE Main 2023 (Online) 1st February Evening Shift Physics - Magnetic Effect of Current Question 61 English

A
$$4\mu\mathrm{T}$$
B
$$3\mu\mathrm{T}$$
C
$$6\mu\mathrm{T}$$
D
$$1\mu\mathrm{T}$$
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