Question: Q. 1. A toroid of
(a) is non-zero and points in the
(b) points along the axis of the toroid
(c) is zero, otherwise there would be a field falling as
(d) is pointing radially outwards.
[NCERT Exemplar]
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Solution:
Ans. Correct option : (c)
Explanation: As we know that a toroid can be considered as a ring shaped closed solenoid. So that it is like an endless cylindrical solenoid.
So, the magnetic field is only confined inside the body of a toroid in the form of concentric magnetic lines of force.
For any point inside the empty space surrounded by toroid and outside the torol, the magnetic field
