A circuit that has a relay does not work but the relay can be heard to click when activated. Technician A says the coil of the relay could be open. Technician B says that the coil of the relay could be shorted. Which technician is correct?
a. Technician A only
b. Technician B only
c. Both Technicians A and B
d. Neither Technician A nor B
Answer: d. Neither technician A nor B.
Explanation: Technician A is not correct because the relay could not click if the coil winding, which creates the magnetic field needed to move the armature (movable contact) of the relay, were open. Technician B is not correct because a shorted relay coil could not create a magnetic field strong enough to cause the relay to click. Answers a, b, and c are not correct because neither technician is correct.
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