The Length of a Certain Wire Is Doubled and at the Same

question 19

Multiple Choice

The length of a certain wire is doubled and at the same time its radius is also doubled. What is the change in the resistance of this wire?

• A) It stays the same.
• B) It is doubled.
• C) It is quadrupled.
• D) It is reduced by a factor of 2.
• E) It is reduced by a factor of 4.

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Definitions:

Toxin

A poisonous substance produced within living cells or organisms that can cause disease when introduced into the body tissues.

Organic Compound

A chemical compound containing carbon atoms bonded to other elements like hydrogen, often found in living organisms.

Cellular Interactions

The various ways in which cells communicate with each other, often involving specific molecules on their surfaces.

Lethal Dosage

A measure of the amount of a substance required to cause death in a target organism or population.