JEE Class main Answered
Urgent... Plz plz solve this numerical attached below.
Asked by subhrajayanta64 | 25 Aug, 2019, 03:28: AM
Expert Answer
Figure shows a uniformly charged disc of radius R with uniform charge density σ per unit area.
Let the axis of disc coincide with z-axis of cartesian coordinate system and centre of disc is at origin.
If the disc is roatating with angular velocity ω, then we get current flow in circular direction due to
rotational motion of charges in the disc. This creates magnetic field in surrounding region
Magnetic vector potential A at a point P on the axis which is at a distance z due to small area element da is given by
...............................(1)
where K is current density vector, K = σ ω r and area element da = dr rdφ = r dr dφ
By using these substitutions, eqn.(1) is written as
......................(2)
By substituting the above integration results in eqn.(2), we get Vector potential A as
Direction of vector potential is along +ve z-axis , as per eqn.(1) [ da is vector area , direction of da is along z-axis ]
Answered by Thiyagarajan K | 25 Aug, 2019, 04:25: PM
Application Videos
JEE main - Physics
Asked by arivaryakashyap | 23 Apr, 2024, 10:40: AM
ANSWERED BY EXPERT
JEE main - Physics
Asked by ratnadeep.dmr003 | 21 Apr, 2024, 11:06: PM
ANSWERED BY EXPERT
JEE main - Physics
Asked by ksahu8511 | 19 Apr, 2024, 11:55: AM
ANSWERED BY EXPERT
JEE main - Physics
Asked by mohammedimroz | 13 Apr, 2024, 09:48: PM
ANSWERED BY EXPERT
JEE main - Physics
Asked by medhamahesh007 | 02 Apr, 2024, 11:11: AM
ANSWERED BY EXPERT
JEE main - Physics
Asked by gundlasumathi93 | 31 Mar, 2024, 02:13: PM
ANSWERED BY EXPERT
JEE main - Physics
Asked by chhayasharma9494 | 31 Mar, 2024, 12:47: PM
ANSWERED BY EXPERT
JEE main - Physics
Asked by archithateja3 | 30 Mar, 2024, 10:23: PM
ANSWERED BY EXPERT
JEE main - Physics
Asked by Machinenineha | 27 Mar, 2024, 05:28: PM
ANSWERED BY EXPERT