Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Magnetics question

2023 · 8 Apr · Shift 2 · Q65
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Physics
  4. /Magnetics
  5. /2023 · 8 Apr · Shift 2 · Q65

Magnetics question

2023 · 8 Apr · Shift 2 · Q65

JEE MainPhysicsMagneticsNumerical+4 / −1
The ratio of magnetic field at the centre of a current carrying coil of radius rrr to the magnetic field at distance rrr from the centre of coil on its axis is x:1\sqrt{x}: 1x​:1. The value of xxx is ‾\underline{\hspace{2cm}}​
Numerical answer
PreviousNext

More from Magnetics

  • A straight wire carrying a current of 14 A is bent into a semi-circular arc of radius 2.2 cm as shown in the figure. The magnetic field produced by the current at the centre (O) of the arc. is ​… Includes diagram2023 · Numerical
  • 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.…2023 · MCQ
  • The source of time varying magnetic field may be (A) a permanent magnet (B) an electric field changing linearly with time (C) direct current (D) a decelerating charge particle (E) an antenna fed with a digital signal Choose the correct…2023 · MCQ
  • An electron is moving along the positive x-axis. If the uniform magnetic field is applied parallel to the negative z-axis, then A. The electron will experience magnetic force along positive y-axis B. The electron will experience…2023 · MCQ
  • A straight wire AB of mass 40 g and length 50 cm is suspended by a pair of flexible leads in uniform magnetic field of magnitude 0.40 T as shown in the figure. The magnitude of the current… Includes diagram2023 · Numerical
  • An electron in a hydrogen atom revolves around its nucleus with a speed of 6.76×106 ms−1 in an orbit of radius 0.52 A∘. The magnetic field produced at the nucleus of the hydrogen atom is ​…2023 · Numerical
  • Two long straight wires P and Q carrying equal current 10A each were kept parallel to each other at 5 cm distance. Magnitude of magnetic force experienced by 10 cm length of wire P is F 1​. If distance between wires is halved and…2023 · MCQ
  • A circular loop of radius r is carrying current I A. The ratio of magnetic field at the center of circular loop and at a distance r from the center of the loop on its axis is :2023 · MCQ