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

Magnetics question

2020 · 3 Sep · Shift 2 · Q42
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Physics
  4. /Magnetics
  5. /2020 · 3 Sep · Shift 2 · Q42

Magnetics question

2020 · 3 Sep · Shift 2 · Q42

JEE MainPhysicsMagneticsNumerical+4 / −1
A galvanometer coil has 500 turns and each turn has an average area of 3 ×\times× 10–4 m2 . If a torque of 1.5 Nm is required to keep this coil parallel to a magnetic field when a current of 0.5 A is flowing through it, the strength of the field (in T) is ‾\underline{\hspace{2cm}}​.
Numerical answer
PreviousNext

More from Magnetics

  • A wire A, bent in the shape of an arc of a circle, carrying a current of 2 A and having radius 2 cm and another wire B, also bent in the shape of arc of a circle, carrying a current of 3 A and having radius of 4 cm, are placed as shown in… Includes diagram2020 · MCQ
  • A circular coil has moment of inertia 0.8 kg m2 around any diameter and is carrying current to produce a magnetic moment of 20 Am2 . The coil is kept initially in a vertical position and it can rotate freely around a horizontal diameter.…2020 · MCQ
  • A square loop of side 2 a, and carrying current I, is kept in XZ plane with its centre at origin. A long wire carrying the same current I is placed parallel to the z-axis and passing through the point (0, b, 0), (b >> a). The…2020 · MCQ
  • An iron rod of volume 10–3 m3 and relative permeability 1000 is placed as core in a solenoid with 10 turns/cm. If a current of 0.5 A is passed through the solenoid, then the magnetic moment of the rod will be :2020 · MCQ
  • A particle of charge q and mass m is moving with a velocity −vi(v e 0) towards a large screen placed in the Y - Z plane at a distance d. If there is a magnetic field B=B0​k , the maximum value…2020 · MCQ
  • An electron is moving along +x direction with a velocity of 6 × 106 ms–1. It enters a region of uniform electric field of 300 V/cm pointing along +y direction. The magnitude and direction of the magnetic field set up in this region…2020 · MCQ
  • A square loop of side 2 a and carrying current I is kept in xz plane with its centre at origin. A long wire carrying the same current I is placed parallel to z-axis and passing through point (0, b, 0), (b >> a). The magnitude of…2020 · MCQ
  • A charged particle going around in a circle can be considered to be a current loop. A particle of mass m carrying charge q is moving in a plane with speed v under the influence of magnetic field B. The magnetic moment of…2020 · MCQ