Answer:
Kirchhoff's Current Law states that” the algebraic sum of all the currents at any node point or a junction of a circuit is zero”. The direction of incoming currents to a node is taken as positive while the outgoing currents are taken as negative.
Answer: Option B -- Bloodletting
Explanation:
Bloodletting has been in existence since over two thousand years ago. It's the widely known and used procedure by surgeon and physician as at then. It can be defined as the method of removing or withdrawing blood from patient's body in order to prevent/cure him/her from any illness or disease.