A closely wound solenoid of 800800 turns and area of cross-section 2.5×10−4 m22.5×10-4 m2 carries a current of 3.0 A3.0 A . What is its associated magnetic momen

A closely wound solenoid of 800 turns and area of cross section 2.5 × 10–4 m2 carries a current of3.0 A. Explain the sense in which the solenoid acts like a bar magnet. What is its associated magneticmoment?26. Explain resonance for an L-C-R series circuit and write its uses. In what kind of circuit willit possible?27. Obtain the expression of torque acting on electric dipole in uniform external electric field.28. Obtain the expression of electric field by a straight wire of infinite length and with linear chargedensity ‘l’

A solenoid has core of a material with relative permeability 500 and its windings carry a current of 1 A. The number of turns of thesolenoid is 500 per metre. Then find magnetization of the material

Describe the magnetic field of a solenoid.

A solenoid of 1200 turns is wound uniformly in a single layer on a glass tube 2 m long and 0.2 m in diameter. The magnetic intensity at the center of the solenoid when a current of 2 A flows through it is:

A solenoid with 500 loops has a cross sectional area of 8 cm2. It is suddenly transferred from a region where the magnetic field is 0.5 T to a region where there is no magnetic field. If the transfer requires 0.04 s and the resistance of the solenoid is 4 Ω. Determine : i)                    Magnetic flux