How can a magnetic reed switch be returned to normally open state?

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Multiple Choice

How can a magnetic reed switch be returned to normally open state?

A magnetic reed switch is opened or closed by the presence of a magnetic field. In a normally open configuration, the contacts are separated when there is no magnetic field, and they close only when a magnet is nearby. To return to the normally open state, you simply remove the magnetic field—the reeds no longer attract, and springs push them apart again, reopening the circuit. Applying a magnetic field would keep it closed, and shorting the leads or applying current doesn’t actuate the switch.

A magnetic reed switch is opened or closed by the presence of a magnetic field. In a normally open configuration, the contacts are separated when there is no magnetic field, and they close only when a magnet is nearby. To return to the normally open state, you simply remove the magnetic field—the reeds no longer attract, and springs push them apart again, reopening the circuit. Applying a magnetic field would keep it closed, and shorting the leads or applying current doesn’t actuate the switch.

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