Consider Two Copper Wires of Equal Cross-Sectional Area

question 128

Multiple Choice

Consider two copper wires of equal cross-sectional area. One wire has 3 times the length of the other. How do the resistances of these two wires compare?

• A) The longer wire has 3 times the resistance of the shorter wire.
• B) The longer wire has 9 times times the resistance of the shorter wire.
• C) The longer wire has 27 times times the resistance of the shorter wire.
• D) Both wires have the same resistance.
• E) The longer wire has 1/3 the resistance of the shorter wire.

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Definitions:

Calcium

An essential mineral for human health, crucial for bone and teeth formation, blood clotting, and muscle function.

Bones

The hard, structural components that make up the skeleton of vertebrates, providing support, protection, and aiding in movement.

Radioactive Iodine

A form of iodine that emits radiation, used in medical treatments and diagnoses, especially for thyroid disorders.

Thyroid Gland

An endocrine gland in the neck that secretes hormones regulating growth and metabolism.