Electronics > Beginners
Trying to prove a point
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CoopedUp:
So I'm not really a beginner but I figured this was the best place to put this. I had a packet for a class and this was a question on it. I want to prove to my teacher that he is wrong by having a poll I guess you could say of what answer you guys think it is and if I'm wrong I guess you can explain to me how I am wrong. I'm not going to say anything about what my answer is but just let me know.

The abbreviations NO (normally open) and NC (normally closed) represent the electrical state of
switch contacts when
A. power is applied
B. the switch is actuated
C. power is not applied
D. the switch is not actuated
ejeffrey:
D for a mechanical switch, potentially C for a relay as long as you are clear that is is power to the coil not to the switch contacts.
mikerj:
With the context provided in the question the answer has to be D.
dietert1:
I guess it should be D.
If the switch gets actuated by an electro magnet (like in a relay), then C may be correct, too: The switch is not actuated as long as power is not applied to the coil.

Regards, Dieter
bsudbrink:
A little vague, but D.
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