A closely wound solenoid of 800 turns and area of cross section `25 xx 10^(-4)m^(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?

A closely wound solenoid of 800 turns and area of cross section 2.5xx10^(-4)m^2 carries a current of 3A. What is its associated magnetic moment?

A closely wound solenoid of 1000 turns and area of cross section 2xx10^(-4)m^(2) carries a current of 2A. If is placed with its horizontal axis at 30^(@) with the direction of a uniform horizontal magnetic field of 0.16 T. What is the torque experienced by the solenoid?

A closely wound solenoid of 1000 turns and area of cross section 2xx10^(-4)m^(2) carries a current of 2A. If is placed with its horizontal axis at 30^(@) with the direction of a uniform horizontal magnetic field of 0.16 T. What is the amount of work done to rotate the solenoid from stable orientation to unstable orientation?

A 0.5 m long solenoid has 500 turns and has a flux density of 2.52xx10^(-3)T at its centre. Find the current in the solenoid.

A solenoid with 7 turns per unit length is carrying a current of 2.5A . What is the magnetic intensity inside the solenoid ?

A long solenoid having 450 turns per m carries a current of 1.6 A. At the centre of the solenoid a coil of 180 turns with cross sectional area 3.5 cm^(2) is placed having its axis parallel to the field produced by the solenoid. What will be the amount of induced emf when the direction of current in the solenoid is reversed within 0.03 s?

A solenoidal coil has 50 turns per centimeter along its length and a cross sectional area of 4xx10^(-4)m^(2) . 200 turns of another wire is wound round the first solenoid co-axially. The two coils are electrically insulated from each other. Calculate the mutual inductance between the two coils.

The radius of a circular coil of 100 turns in 5 cm and it carries a current of 10 A. What torque will act on the coil when its plane is kept at 30^(@) with a uniform magnetic field of 0.01 T?