The Physical Universe 17Th edition By Konrad Krauskopf – Test Bank

The Physical Universe 17Th edition By Konrad Krauskopf – Test Bank

Chapter 06 Test Bank KEY

1.  Electric charge

A.  can be subdivided indefinitely.

B.  occurs only in separate parcels of ±1.6 × 10^-19 C.

1. occurs only in separate parcels of ±1 C.

1. occurs only in separate parcels whose value depends on the particle carrying the charge.

Accessibility: Keyboard Navigation

Blooms: 1. Remember

Figure: 06.06

Gradable: automatic

Section: 06.02

Topic: Atomic Physics

1. A negative electric charge

1. interacts only with positive charges.

1. interacts only with negative charges.

C. interacts with both positive and negative charges.

D.  may interact with either positive or negative charges, depending on circumstances.

Accessibility: Keyboard Navigation

Blooms: 1. Remember

Figure: 06.01

Gradable: automatic

Section: 06.01

Topic: Electric Forces

1. Coulomb’s formula F = KQ₁Q₂/R² gives the force between two charges in free space. The value of K

A.  is the same under all circumstances.

1. is different for positive and negative charges.

1. depends on the masses of the charged particles.

1. equals the charge on the electron.

Accessibility: Keyboard Navigation

Blooms: 1. Remember

Gradable: automatic

Section: 06.03

Topic: Electric Forces

1. Which of the following statements is not true?

1. The positive charge in an atomic nucleus is due to the protons it contains.

1. All protons have the same charge.

1. Protons and electrons have charges equal in magnitude although opposite in sign.

1. Protons and electrons have equal masses.

Accessibility: Keyboard Navigation

Blooms: 1. Remember

Gradable: automatic

Section: 06.02

Topic: Atomic Physics

5.Relative to the electric force between two protons, the gravitational force between them is

A.  weaker.

1. equal in magnitude.

1. stronger.

1. Any of these choices could be correct, depending on how far apart the protons are.

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Blooms: 1. Remember

Gradable: automatic

Section: 06.05

Topic: Electric Forces

1. The electrons in an atom

A.  are bound to it permanently.

B.  are some distance away from the nucleus.

1. have more mass than the nucleus.

1. may be positively or negatively charged.

Accessibility: Keyboard Navigation

Blooms: 1. Remember

Figure: 06.05

Gradable: automatic

Section: 06.02

Topic: Atomic Physics

1. Atoms and molecules are normally

A.  electrically neutral.

1. negatively charged.

1. positively charged.

1. ionized.

Accessibility: Keyboard Navigation

Blooms: 1. Remember

Gradable: automatic

Section: 06.02

Topic: Atomic Physics

1. The nucleus of an atom

A.  contains most of the atom’s mass.

1. is nearly as large as the atom.

1. is electrically neutral.

1. may contain protons, neutrons, and electrons.

Accessibility: Keyboard Navigation

Blooms: 1. Remember

Gradable: automatic

Section: 06.02

Topic: Atomic Physics

1. An object has a positive electric charge whenever

A.  it has an excess of electrons.

B.  it has a deficiency of electrons.

1. the nuclei of its atoms are positively charged.

1. the electrons of its atoms are positively charged.

Accessibility: Keyboard Navigation

Blooms: 1. Remember

Blooms: 2. Understand

Gradable: automatic

Section: 06.01

Section: 06.02

Topic: Atomic Physics

10. Which of the following statements is not true?

1. Protons are positively charged.

1. The proton mass is greater than the electron mass.

1. The proton mass is almost the same as the neutron mass.

1. A proton in an atom circulates around its nucleus.

11. A molecule that has lost an electron becomes a

A.  positive ion.

1. negative ion.

1. nucleus.

1. superconductor.

12. Which of the following statements is correct?

1. Electrons carry electric currents.

1. The motion of electrons produces electric currents.

1. Moving electrons constitute electric currents.

1. Electric currents are carried by conductors and insulators only.

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