Physics CBSE Class 12 Sample Paper for 2023 Boards - Solution

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Solutions to CBSE Sample Paper - Physics Class 12

Question 5 - Physics CBSE Class 12 Sample Paper for 2023 Boards - Solution - Solutions to CBSE Sample Paper - Physics Class 12

Last updated at April 16, 2024 by

A long straight wire of circular cross section of radius a carries a steady current I. The current is uniformly distributed across its cross section. The ratio of the magnitudes of magnetic field at a point distant a/2 above the surface of wire to that at a point distant a/2 below its surface is

 

  1. 4 :1
  2. 1:1
  3. 4: 3
  4. 3 :4

 

Answer:

(iii) 4:3

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo