AP (Advanced Placement) Physics(B-C): Questions 138 - 140 of 921

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Question number: 138

» Electrostatics

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MCQ▾

Question

If the distance between a charge to a specific point doubles, then

Choices

Choice (5)Response

a.

the electric field reduces by one half and the electric potential reduces by one half

b.

the electric field reduces by one forth and the electric potential reduces by one forth

c.

the electric field remains constant and the electric potential reduces by one half

d.

the electric field reduces by one forth and the electric potential reduces by one half

e.

Question does not provide sufficient data or is vague

Question number: 139

» Electrostatics

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MCQ▾

Question

Which of the following does NOT obey an inverse square law, that is, strength or intensity decreases with the inversely square of distance?

Choices

Choice (5)Response

a.

Electric field

b.

Light intensity

c.

Electric potential

d.

Gravitational field

e.

All of the above

Question number: 140

» Gravitation and Circular Motion

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MCQ▾

Question

A satellite is in a circular orbit around Earth at an altitude of three times of Earth radius above the surface of Earth. Compare the gravitational force on the satellite, at this altitude to the gravitational force of Earth on the satellite, when it is placed on the surface of earth.

Choices

Choice (5)Response

a.

The gravitational force is one sixteenth times in orbit as that on the surface of Earth.

b.

There is no gravitational force on the satellite when it is moving in orbit.

c.

The gravitational force is one-half in orbit as that on the surface of Earth.

d.

The gravitational force is one-quarter times in orbit as that on the surface of Earth.

e.

Question does not provide sufficient data or is vague

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