The first example would have to be: The pen has broken <something> THAT sentence is active voice, since the pen is breaking something else. However, I honestly don't see that sentence being used much. The pen got broken This is passive. A better way to put it is: The pen has been broken OR The pen was broken There is some confusion here, because you could be saying the the pen was broken (in a broken state) in the past. Some context would be needed.

The pen has been broken. The pen broke.