pg. 1 PHYS 1260 Final Exam/ All Practice Exam Questions with Correct Verified Answers – Rated A+
The electrical force between charges is strongest when the charges are ✓ Close together
The electrical force between electric charges depends only on their ✓ Magnitude & ✓ Separation distance
The electrical force on a 2-C charge is 60 N. The electric field where the charge is located is
✓ 30 N/C
The direction of the electric field is the same as the direction of the electric (Coulomb) force exerted on ✓ a proton
Between a pair of equal and opposite charges, field lines are ✓ directed from positive to negative.✓ more concentrated closer to the charges.✓ vectors, with patterns that stem from the inverse-square law.
Electric potential, measured in volts, is the ratio of electrical potential energy to the amount of electric ✓ charge
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pg. 2 If 10 J of work is done in pushing a 1-C charge into an electric field, its electric potential relative to its starting position is
✓ 10 V
Suppose 10 J of work is done in pushing a 1-C charge into an electric field. When released, the test charge's potential energy will be converted to ✓ Kinetic Energy
The net charge on a parallel-plate capacitor depends on ✓ the area of the capacitor plates.✓ the distance between the capacitor plates.✓ the medium between the capacitor plates.
If you stretch a copper wire so that it is thinner, the resistance between its ends ✓ Increases
When you turn on a lamp, the initial current in its filament is greater at first, rather than a moment later, which indicates ✓ Increased temperature means increased resistance
Ohm's law tells us that the amount of current produced in a circuit is ✓ Directly proportional to voltage ✓ Inversely proportional to resistance
Just as gravity is the study of a wide range of gravitational interactions, electricity is the study of a wide range of ✓ electrical interactions.
According to the special theory of relativity, while traveling at a very high speed your pulse rate ✓ remains unchanged
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pg. 3 An observer on the planet sees a contracted spaceship, while an observer on the spaceship sees - ANSWER - a contracted planet
According to Einstein's theory of special relativity - ANSWER - space and time are aspects of each other, and energy and mass are aspects of each other [both of these]
Comparing the light from a glowing tube of neon gas and the beam of a helium-neon laser, there is a greater number of spectral lines in light from the - ANSWER - neon gas tube
According to Louis de Broglie, a material particle has - ANSWER - particles and waves properties [both of these]
The superposition of identical waves affects - ANSWER - amplitude Electrostatics is a branch of electricity that focuses on electrical charge. & electrical force.both of these when static
In an electrically neutral atom the number of protons in the nucleus is equal to the number of ✓ electrons that surround the nucleus.
The pair of protons in the nucleus of a helium atom ✓ attract a pair of orbiting electrons
Two protons attract each other gravitationally and repel each other electrically. The stronger of these two forces is ✓ electrical
The unit of electric charge, the coulomb, is the charge on a ✓ specific large number of electrons
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