Question

Magnetic field lines can be entirely confined within the core of a toroid but not within a straight solenoid solenoid why

Answer 1

Answer:

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Explanation:

Moving Charges And Magnetism. Magnetic field lines can be entirely confined within the core of a toroid, but not within a straight solenoid. ... But, in a solenoid magnetic field lines due to individual wires cancel out longitudinally and add up horizontally. Hence, magnetic field lines exist even outside the core.

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