Magnetic field liness can be entirely confined within the core of a toroid, but not within a straight solenoid Why ?

Magnetic field lines can be entirely confined within the core of a toroid, but not within a straight solenoid. Why?

(A): Magnetic field lines can be entirely confined within the core of a toroid. But not within a straight solenoid. (R) : The magnetic field inside the solenoid is uniform.

A magnetic field can be produced by

Why can't two magnetic field lines cross each other? Draw the magnetic field lines (including field directions) of the magnetic field due to a long straight solenoid. What important property of this field is indicated by this field line pattern? Name any two factors on which the magnitude of the magnetic field due to this solenoid depends.

The magnetic field inside a solenoid is-

A toroid has a core (non ferromagnetic material) of inner radius 25cm and outer radius 26cm around which 3500 turns of wire are wound. If the current in the wire is 11A , what is the magnetic field (a) outside the toroid (b) inside the core of the toroid (c) in the empty space surrounded by the toroid?

Draw magnetic field lines in and around a current carrying straight solenoid.

Three identical long solenoids P,Q and R are connected to each other as shown in figure . If the magnetic field at the centre of P is 2.0 T, what would be the field at the centre of Q? Assume that the field due to any solenoid is confined within the volume of that solenoid only.

What does the divergence of magnetic field lines near the ends of a current carrying straight solenoid indicate?

The radius of circular loop is 'a'. Magnetic field is incerasing at a constant rate a. Magnetic field of a confined with the axis of the loop. Resistance per unit length of the wire of loop is rho . Choose the correct option(s):