A solenoid bent into the form of a closed ring is called a toroidal solenoid.
Note: The magnetic field exists only in the tubular area bound by the coil and it does not exist in the area inside and outside the toroid.
i.e. B is zero at O and Q and non-zero at P.
We are sorry that this post was not useful for you!
Let us improve this post!
Tell us how we can improve this post? Please mention your Email so that we can contact you for better feedback.