Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AP EAMCET202317 May 2023Evening ShiftPhysicsMagnetic Effects of CurrentActual

The axial field ( B _ A ) and the equatorial field ( B _ E ) due to a short bar magnet at equal distances are related as

Options

  1. AB _ A =2 ~B _ E
  2. BB _ A =-2 ~B _ E
  3. CB _ A =- B _ E
  4. DB _ A =-2 B _ E

Correct answer

A. B _ A =2 ~B _ E

Step-by-step solution

aligned & B _E= ₀ ~m 4 r ^3 & ~B _ A = 2 ₀ ~m 4 r ^3 & B _ E B _ A = 1 2 B _ A =2 ~B _ E aligned

Practice Magnetic Effects of Current on Quantrex Academy →

More from Magnetic Effects of Current

The current through the circular coil is halved and the radius of the coil is doubled. If B₁ and B₂ are respectively the initial and final magnetic field strength, then: 2026A circular coil of radius r = 10 ,cm having 300 turns carries a current of 2A. The coil is suspended vertically in a uniform magnetic field of strength 0.7 T. If the plane of the c 2026Two long parallel conductors X and Y are placed vertically at a distance d apart. Conductor X carries a current I upwards and conductor Y carries a current 2I downwards. A third lo 2026A proton is moving along negative X axis. If a uniform magnetic field is applied parallel to the positive Z axis, then choose the correct answer from the following options; 1. The 2026The magnetic field at the centre of a wire loop formed by two semicircular wires of radii r₁ = 3.14m and r₂ = 6.28m and carrying a current of I =2A is: 2026If a wire of length ' L ' carrying a current ' i ' is bent in the shape of a semi-circular arc as shown in the figure, then the magnetic field at centre of the arc is 2025If a current of 15 A passes through a solenoid of length 25 cm, radius 2 cm and number of turns 500, then the magnetic moment of the solenoid is 2025The maximum magnetic field produced by a current of 12 A passing through a copper wire of diameter 1.2 mm is 2025 Full Magnetic Effects of Current list All AP EAMCET PYQs