Calculating the magnetic moment ( in `Am^2`) of a thin wire with a current I=8A, wound tightlly on a half a tore (see figure). The diameter of the cross section of the tore is equal to d=5cm, and the number of turns is N=500.

Calculating the magnetic moment ( in Am^2 ) of a thin wire with a current I=0.8A, wound tightlly on a half a tore (see figure). The diameter of the cross section of the tore is equal to d=5cm, and the number of turns is N=500.

Calculate the magnetic moment of a thin wire with a current I=0.8 A , wound tightly on half a toroid (figure).the diameter of the cross-section of the tore is equal to d=5.0 cm ,the number of turns is N=500 .

The magnetization of a bar magnet of length 5 cm, cross-sectional area 2 cm^2 and magnetic moment 1 Am^2 is

A wire carrying current of 5 A is wound on a toroid in 4,000 turns, Calculate the magnetic field inside the core of toroid and outside the toroid if its inner radius is 15 cm and the outer radius is 18 cm.

A closely wound solenoid 80cm long has 5 layers of windings of 400 turns each .The diameter of the solenoid is 1.8cm .If the current carried is 8A ,the magnetic field near the centre of the solenoid is ...

A circular coil of N turns is made of a conducting wire of a certain length . When a current I is sent through it , the magnetic moment is p , Another coil of 2N turns is made with the same wire and the same current is sent through it . The magnetic moment becomes p'. If p : p ' = n : 1 , what is the value of n ?