The region inside a current carrying toroid winding is filled with Aluminium having susceptibility `x=2.3xx10^-5`. What is the percentage increase in the magnetic field in the presence of Aluminium over that without it?

The space within a current carrying toroid is filled with tungsten of susceptibility 6.8 xx 10^-5 . The percentage increase in the magneticfield is

Find the percent increase in magnetic field B when the space within a current-carrying toroid is filled with aluminium. The susceptibility of aluminium is 2.1xx10^-5 .

The susceptibility of magnesium at 300 K is 2.4 xx 10^-5 . At what temperature will the susceptibility increase to 3.6 xx 10^-5 ?

A very long straight wire carries a current 5.2A. What is the magnitude of the magnetic field at a distance 3.1 cm from the wire?

The susceptibility of magnesium at 300 K is 1.2 xx 10^-5 . At what temperature will the susceptibility increase to 1.8 xx 10^-5 ?

A 50 m long solenoid has 500 turns and produces a magnetic field of 2.5 xx 10^-4 T at its centre. Find the current in the solenoid.

Answer the following questions : What is the effect on the magnetic needle in Oersted's experiment, when (1) a current is passed through the wire (2) the current through the wire is increased (3) the current through the wire is stopped (4) the current through the wire is reversed (5) the distance between the magnetic needle and the wire is increased, keeping the current through the wire constant ?

A 3 cm wire carrying a current of 10 A is placed inside be solenoid perpendicular to its axis. The magnetic field inside the solenoid is given to be 27 T. What is the magnetic force on the wire?