The purpose of patrick henry's speech is to

His purpose was to persuade fellow delegates to adopt a defensive stance against Great Britain.

Explanation:

On March 23, 1775, Patrick Henry delivers "give me liberty, or give me death" speech after putting forward a resolution proposing that Virginia’s counties raise militiamen for securing their liberties and rights from Grate Britain's continuous violations.  After Thomas Jefferson and Richard Henry Lee both lent their support, the resolution passed by only a few votes.

the direction of the magnetic field produced by an electric current will change when the direction of the electric current changes. for example : if a current is flowing in a straight length of wire, the magnetic field is described by a concentric circle (using right-hand rule).

anxious,the clues in the question suggest he was embarrassed and anxious about boo radley.