Begging the question:
Often called circular reasoning, begging the question occurs when the believability of the evidence depends on the believability of the claim. In other words, one assumes a statement to be true when it has not been proven so.

Example:
Rebecca: "Goody Ann! You sent a child to conjure up the dead?"
Mrs. Putman: "Let god blame me, not you, not you, Rebecca I'll not have judging me anymore! Is it natural work to lose 7 children before they live a day?"
-The Crucible

Explanation:
This is an excellent of begging the question. Mrs. Putnam believes that it is unnatural to lose so many children, she believes it must be a curse cast on her from one of the witches in the town. Arthur Miller uses begging the question to add to the suspense of The Crucible. This serves the purpose of showing the betrayal and finger pointing that was created during the Salem Witch Trials. The main purpose of begging the question in The Crucible shows how Little proof was shown or needed, and how the allegation were far fetched and the  believeability of the claim was just assumed to be true, without real proof.