Answers25-26 TX-Physics B-CRCoulomb's Law

Electric Fields Answers

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1
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What is the equation for calculating the electrical force, Fe, between two charges?

A
Fe = k
Option A
B
Fe =
Option B
C
Fe = k
Option C
D
Fe = k
Option D
2
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How does the electrical force relate to the charge of an object?

A
It is inversely proportional to the square of the charge.
B
It is directly proportional to the square of the charge.
C
It is inversely proportional to the charge.
D
It is directly proportional to the charge.
3

Both the electrical force and the gravitational force between two objects share which relationship?

A
They are directly proportional to mass.
B
They are inversely proportional to the square of the distance.
C
They are inversely proportional to charge.
D
They are directly proportional to the square of the distance.
4

Charges of +2 µC and +3 µC are 4 mm from each other. Raina’s group draws four diagrams trying to represent the electrical force between the charges.Which diagram is correct?

Question illustration
A
W
B
X
C
Y
D
Z
5

Rolanda sees an error in her friend’s graphic organizer comparing electrical and gravitational forces.

Question illustration
A
The note about mass belongs in region Z, and the note about charge belongs in region X.
B
The note about mass belongs in region Y, and the note about infinite reach belongs in region Z.
C
The note about charge belongs in region Y.
D
The note about infinite reach belongs in region Y.
7

The table lists the mass and charge of a proton and a neutron.How do the gravitational and electrical forces between a proton and a neutron compare?

Question illustration
A
The gravitational force is much smaller than the electrical force for any distance between the particles.
B
The gravitational force is much larger than the electrical force for any distance between the particles.
C
The gravitational force is much smaller than the electrical force for only very small distances between the particles.
D
The gravitational force is much larger than the electrical force for only very small distances between the particles.
9

One charge is decreased to one-third of its original value, and a second charge is decreased to one-half of its original value.

A
It will increase to six times the original force.
B
It will increase to thirty-six times the original force.
C
It will decrease to one-sixth the original force.
D
It will decrease to one-thirty-sixth the original force.
10

A positive charge, q1, of 5 µC is 3 × 10–2 m west of a positive charge, q2, of 2 µC. What is the magnitude and direction of the electrical force, Fe, applied by q1 on q2?

A
magnitude: 3 Ndirection: east
B
magnitude: 3 Ndirection: west
C
magnitude: 100 Ndirection: east
D
magnitude: 100 Ndirection: west

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Electric Fields Answers — 25-26 TX-Physics B-CR