Magnetic field lines can be entirely confined within the core of a toroid, but not within a straight solenoid.
Magnetic field lines can be entirely confined within the core of a toroid, but not within a straight solenoid. Why?
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Magnetic field lines can be entirely confined within the core of a toroid because toroid has no ends. A solenoid is open ended and the field lines inside it which is parallel to the length of the solenoid, cannot form closed curved inside the solenoid
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