24. Electric Force & Field; Gauss' Law

Coulomb's Law (Electric Force)

Multiple Choice
Which of the following best describes Coulomb’s Law for the electrostatic force between two point charges?
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Multiple Choice
Which of the following is an example of the electromagnetic force?
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Multiple Choice
In which direction will the −1 C charge move? If it has a mass of 10 g, what will its initial acceleration be?
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Multiple Choice
According to Coulomb's Law, what happens to the magnitude of the electric force between two point charges if the distance between them doubles? $F = \frac{k q_{1} q_{2}}{r^{2}}$
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Multiple Choice
According to Coulomb's Law, what is the magnitude of the electric force between two point charges $q_{1}$ and $q_{2}$ separated by a distance $r$ in vacuum?
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Multiple Choice
According to Coulomb's Law, how does the magnitude of the electric force between two point charges change as the distance between them increases?
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Multiple Choice
A $3.0 nC$ charge is at the origin, a $- 12 nC$ charge is at $x = 2.0 cm$ . Where, on the x-axis, could you place a $- 45 nC$ charge so that it would experience no net force?
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Multiple Choice
In Coulomb's law for the electric force between two point charges, which factors determine the magnitude of the force?
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Multiple Choice
According to Coulomb's Law, what is the magnitude of the electric force between two point charges $q_{1}$ and $q_{2}$ separated by a distance $r$ in vacuum?
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Multiple Choice
In the context of Coulomb's law, what is the magnitude of the electromagnetic (electrostatic) force between two point charges $q 1$ and $q 2$ separated by a distance $r$ in vacuum?
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Multiple Choice
What is the distance between a $10 μ C$ charge and a $24 μ C$ charge if the magnitude of the force between them is $1.2 mN$ ?
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Multiple Choice
Two point charges, $q_{a}$ and $q_{b}$ , are separated by a distance $r$ . What is the magnitude of the electric force on charge $q_{a}$ due to $q_{b}$ according to Coulomb's Law?
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Multiple Choice
In case 1, a charge q is at the origin, and a charge 5q is 1 m away. In case 2, a charge q is at the origin, and a charge -5q is 1 m away. Is the magnitude of the force exerted on the charge at the origin in case 1 greater than, less than, or equal to the force in case 2?
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Multiple Choice
Two 1 kg masses are 1 m apart on a frictionless table. Each has +1 C of charge. What is the magnitude of the electric force on one of the masses according to Coulomb's Law?
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Multiple Choice
There is a $- 4.00 nC$ charge at the origin. A $9.00 nC$ charge is on the x-axis at $x = 2.00 m$ . A $5.00 nC$ charge is on the y-axis at $y = - 1.00 m$ . What is the total force on the $- 4.00 nC$ charge at the origin? Give your answer as a magnitude and an angle counterclockwise from the positive x-axis.
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