Physics Third Quarter

What is a basic property of matter carried by some elementary

particles that govern how the particles are affected by an electric or magnetic field?

• Electric charge

• Mass

• Electronegativity

• Magnetism

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The Coulomb is the unit for:

• Charge

• Force

• Distance

• Mass

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What happens to the force between two charged objects when you double the distance between them?

• it doubles

• it is cut in half

• it quadruples

• it is cut by 1/4

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The Coulomb is the unit for:

• Charge

• Force

• Distance

• Mass

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If one of the charges doubles, what happens to the force?

• it doubles

• it gets cut in half

• it quadruples

• it is cut by 1/4

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What is the unit for electrostatic charge?

• Coulombs

• Newtons

• Meters

• Joules

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Coulomb’s law states that the force between two charged objects will __________ when the magnitude (value) of the object’s charge increases.

• increase

• decrease

• stay the same

• first increase, then decrease

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What would a negative value for F_e mean?

• The particles are moving away from each other

• The particles have the same charge

• The particles have opposite charges

• The particles are moving towards each other

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A repulsive force exists between which two particles?

• Two neutrons

• An electron and a neutron

• An electron and a proton

• Two protons

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Which is the value of the constant in Coulomb's equation?

• k_e = 9·10^-9

• k_e = 9.8

• k_e = 6.67·10^-11

• k_e = 9 ·10⁹

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