Which of the following statement are correct?

A. Magnetisation of a sample is equal to its magnetic moment per unit volume.
B. For measuring currents, the galvanometer has to be connected in parallel in the circuit.
C. In an ideal toroid the coils are circular.
D. In larger the number of field lines crossing per unit area, the stronger is the magnitude of magnetic field.
E. The currents flowing in the same direction attract each other.

Choose the correct answer from the options given below:

A, C, D and E only

The correct answer is Option (1) → A, C, D and E only

(A) Magnetization (m) is defined as the magnetic moment per unit volume.

(C) In an ideal toroid, the coils are woond in a circular shape along the toroidal path.

(D) The density of magnetic field lines is directly proportional to the strength of the magnetic field. The stronger the field, the more lines per unit area will pass through.

(E) Yes, according to ampere law, currents flowing in the same direction attract each other.