The Quantity $Q$ Of Charge in Coulombs $C$ That Has Passed Through a Point in a Wire Up

question 115

Multiple Choice

The quantity $Q$ of charge in coulombs $C$ that has passed through a point in a wire up to time $t$ (measured in seconds) is given by
$$Q ( t ) = t ^ { 3 } - 3 t ^ { 2 } + 4 t + 3$$
Find the current when $t = 1 \mathrm {~s}$ .

• A) 24
• B) 15
• C) 18
• D) 26
• E) 1

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Definitions:

Molecular Shape

The three-dimensional arrangement of atoms within a molecule, determined by various physical and chemical factors, impacting chemical reactivity and interactions.

Nitrogens

A rephrasing of "Nitrogens" would be: Chemical elements with the symbol N, essential for all living organisms as a constituent of proteins and nucleic acids.

HCN Bond Angle

The angle between the hydrogen, carbon, and nitrogen atoms in hydrogen cyanide, typically close to 180 degrees due to its linear molecular shape.

Hydrogen Cyanide

A highly toxic and volatile chemical compound with the formula HCN, characterized by a distinctive bitter almond odor.