A Battery Has an Internal Resistance

question 51

Multiple Choice

A battery has an internal resistance . Connecting a wire of negligible resistance between the terminals of the battery draws the maximum current from this battery. If instead a resistor is connected between the terminals, a smaller current is produced. What value resistor placed across the terminals would result in the current produced to be half of ?

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Definitions:

Endothelium

Layer of flat cells lining blood and lymphatic vessels and the chambers of the heart.

Precapillary Sphincters

Circular muscular valves located at the entrance of capillaries, regulating blood flow into the capillary beds according to the body's needs.

Tunica Media

Middle, usually muscular, coat of an artery or another tubular structure.

Capillary Beds

Networks of capillaries, the smallest blood vessels, that facilitate the exchange of water, oxygen, carbon dioxide, and many other nutrients and waste substances between blood and tissues.