Question

What is toroid ? Draw magnetic field line for toroid and derive an expression for magnetic field in the core of toroid .​

Answer 1

Answer:

Magnetic lines of force inside the torroid is in the form of concentric circles. Using the law of symmetry, the magnetic field is along the tangent at every point on the circle and is same at each point of the circle. For points inside the core of toroid, Let us consider a circle of radius 'r'.

Answer 2

Answer:

Toroid is a hollow circular ring on which a large number of turns of a wire are closely wound. ... The field B inside the toroid is constant in magnitude for the ideal toroid of closely wound turns and is given by, B = μo n I.

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