In a Laboratory Experiment, Two Unequal Resistors Are Connected Individually

question 3

Multiple Choice

In a laboratory experiment, two unequal resistors are connected individually, then in series, and then in parallel to a group of batteries. Four sets of observations are made of the potential differences, and the corresponding total currents and curves are plotted as shown. The curve that represents the smaller of the two resistors is

• A) 1.
• B) 2.
• C) 3.
• D) 4.
• E) None of these is correct.

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Definitions:

Secretin

A hormone produced by the duodenum that stimulates the pancreas to release bicarbonate-rich fluids to neutralize stomach acid.

Gastrin

A hormone produced by the stomach that stimulates the secretion of gastric acid.

CCK

Cholecystokinin, a hormone that stimulates the digestion of fats and proteins by promoting the release of digestive enzymes and bile from the pancreas and gallbladder.

Submucosa

A layer of tissue beneath the mucosa, containing blood vessels, nerves, and connective tissue, providing support and nourishment to the mucosal layer.