Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEETPhysicsMagnetic Properties of Matter

What is the force and torque acting on a closely wound solenoid with 2000 turns, a cross-sectional area of 1.6 × 10 -4 m 2 , and carrying a current of 4.0 A, when it is suspended through its center and allowed to turn in a horizontal plane, in the presence of a uniform horizontal magnetic field of 7.5 × 10 -2 T at an angle of 30° with the axis of the solenoid?

Options

  1. AForce is 0.048 N; torque = 0.048 Nm
  2. BForce is 0.048 N; torque is zero
  3. CForce is zero; torque is zero
  4. DForce is zero; torque = 0.048 Nm

Correct answer

D. Force is zero; torque = 0.048 Nm

Step-by-step solution

Correct Option is : (D) Force is zero; torque = 0.048 Nm

Practice Magnetic Properties of Matter on Quantrex Academy →

More from Magnetic Properties of Matter

A magnetizing field of 360 A/m produces a magnetic flux density B = 0.6 T in a ferromagnetic material. The permeability of the material in T-m/A is 2026There are four lightweight rod samples P, Q, R and S separately suspended by thread. A bar magnet is slowly brought near to each sample and the following observations are noted (a) 2026A paramagnetic sample shows a net magnetization of 8 A/m when placed in an external magnetic field of 0.6 T at a temperature of 4 K. When the same sample is placed in an external m 2026A magnetizing field of 10^3 A/m produces a magnetic flux density 4 T in an iron rod. The relative permeability of the rod will be (permeability of free space ₀ = 4 10⁻⁷ SI units) 2026In an experiment, the interior of a first current-carrying toroid with 1000 turns per unit length is filled with aluminum (susceptibility 2.4 10⁻⁵ ). A second, identical toroid wit 2026Magnetic susceptibility ( ) is related to magnetic relative permeability ( _r ) by the relation 2026A magnetic material has a relative permeability ( _r) of 6001 . If it is placed in a magnetizing field (magnetic intensity) of H = 2000 A/m , The total magnetic induction (B) insid 2026Which of the following statements is INCORRECT for diamagnetic materials? a. Relative permeability is less than one. b. Magnetic susceptibility is negative and low. c. Magnetic sus 2026 Full Magnetic Properties of Matter list All NEET PYQs