Charge of Uniform Density (40 PC/m²) Is Distributed on a Spherical

question 32

Multiple Choice

Charge of uniform density (40 pC/m²) is distributed on a spherical surface (radius = 1.0 cm) , and a second concentric spherical surface (radius = 3.0 cm) carries a uniform charge density of 60 pC/m². What is the magnitude of the electric field at a point 2.0 cm from the center of the two surfaces?

• A) 1.1 N/C
• B) 4.5 N/C
• C) 1.4 N/C
• D) 5.6 N/C
• E) 0.50 N/C

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Definitions:

Permanent Dipole

A dipole moment that persists in a molecule due to the unequal sharing of electrons in covalent bonds.

Ethylene Glycol

A colorless, odorless, sweet-tasting liquid with the formula C2H6O2, widely used as an automotive antifreeze and a precursor to polymers.

Boiling Point

The temperature at which a liquid turns to vapor at a given pressure, characteristic for every substance.

Molecular Mass

The sum of the atomic masses of all the atoms in a molecule, measured in atomic mass units (amu).