Physics

Moving Charges and Magnetism

Magnetic Field on the Axis of a Circular Current Loop

In the adjacent figure is shown a closed path P. A long straig

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In the adjacent figure is shown a closed path $P$ . A long straight conductor carrying a current $I$ passes through $O$ and perpendicular to the plane of the paper. Then which of the following holds good?

Name: Video answer for In the adjacent figure is shown a closed path P. A long straight conductor carrying a current I passes through O and perpendicular to the plane of the paper. Then which of the following holds good?
Uploaded: 2022-07-29T06:40:32.000Z
Duration: 2 min
Description: In the adjacent figure is shown a closed path P. A long straight conductor carrying a current I passes through O and perpendicular to the plane of the paper. Then which of the following holds good?

\int_{P} B \cdot dl = 0

\int_{P} B \cdot dl = μ_{0} I

\int_{P} B \cdot dl > μ_{0} I

None of these

Views: 5,416 students

Updated on: Sep 24, 2022

Text solutionVerified

A long straight conductor carrying current

I

passes through

O

, then by symmetry, all points of the circular path are equivalent and hence the magnitude of magnetic field should be same at these points.
The circulation of magnetic field along the circle is

\oint B . dl = μ_{0} I

(using Ampere's law)

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Sebastian Discussed

In the adjacent figure is shown a closed path

P

. A long straight conductor carrying a current

I

passes through

O

and perpendicular to the plane of the paper. Then which of the following holds good?

5 mins ago

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Question Text	In the adjacent figure is shown a closed path $P$ . A long straight conductor carrying a current $I$ passes through $O$ and perpendicular to the plane of the paper. Then which of the following holds good?
Updated On	Sep 24, 2022
Topic	Moving Charges and Magnetism
Subject	Physics
Class	Class 12
Answer Type	Text solution:1 Video solution: 2
Upvotes	206
Avg. Video Duration	4 min

In the adjacent figure is shown a closed path $P$ . A long straight conductor carrying a current $I$ passes through $O$ and perpendicular to the plane of the paper. Then which of the following holds good?

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In the adjacent figure is shown a closed path P. A long straight conductor carrying a current I passes through O and perpendicular to the plane of the paper. Then which of the following holds good?

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In the adjacent figure is shown a closed path $P$ . A long straight conductor carrying a current $I$ passes through $O$ and perpendicular to the plane of the paper. Then which of the following holds good?