A closely wound solenoid of 2000 turns and area of cross-section `1.6x10-^4m^2`, carrying a current of 4.0A, is suspended through its centre allowing it to turn in a horizontal plane. Br What is the magnetic moment associated with the solenoid?

A closely wound solenoid of 2000 turns and area of cross-section 1.6x10-^4 m^2 , carrying a current of 4.0A, is suspended through its centre allowing it to turn in a horizontal plane. Br What is the force and torque on the solenoid if a uniform horizontal magnetic field of 7.5x10^2 is set up at an angle of 30° with the axis of the solenoid?

A closely woundsolenoid of 800 turns and area of cross section 2.5xx10^-4m^2 carries a current of 3.0 A. Explain the sense in which the solenoid acts like a bar magnet. What is its associated magnetic moment?

closely wound solenoid of 800 turns and area of A cross-section 2.5x10 m2 carries a current of 3.0A. Explain the sense in which the solenoid acts like a bar magnet. What is its associated magnetic moment?

Consider a tightly wound 100 turn coil of radius 10 cm, carrying a current of 1A. What is the magnitude of the magnetic field at the centre of the cell?