ASU PHYSICS 131 CONCEPTS QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+||BRAND NEW
Which of the following statements are TRUE?
*Electric field lines near negative point charges circle clockwise.
*In a uniform electric field, the field lines are straight, parallel, and
uniformly spaced.
*The electric field created by a point charge is constant throughout
space.
*The electric force acting on a point charge is proportional to the
magnitude of the point charge.
* Electric field lines near positive point charges radiate outward.
Ans✓✓✓ *In a uniform electric field, the field lines are straight,
parallel, and uniformly spaced.
*The electric force acting on a point charge is proportional to the
magnitude of the point charge
*Electric field lines near positive point charges radiate outward.
Which of the following statements are TRUE?
*Two negative charges repel each other.
*Two positive charges attract each other.
*Electric charge is conserved.
*A positive charge and a negative charge attract each other.
,*A neutral object contains no charge carriers.
*Electric charge is quantized. Ans✓✓✓ *Two negative charges repel
each other
*Electric charge is conserved
*A positive charge and a negative charge attract each other
*Electric charge is quantized
When a point charge of +q is placed on one corner of a square, an
electric field strength of 2 N/C is observed at the center of the square.
Suppose three identical charges of +q are placed on the remaining three
corners of the square. What is the magnitude of the net electric field at
the center of the square? Ans✓✓✓ The magnitude of the net electric
field at the center of the square is 0 N/C.
:)
Is it possible for the electric field between two positive charges to equal
zero along the line joining the two charges? Ans✓✓✓ Yes, regardless of
the magnitude of the two charges.
Two charged objects are separated by some distance. The charge on the
first object is greater than the charge on the second object. How does the
force between the two objects compare? Ans✓✓✓ The charged objects
exert electrostatic forces on each other that are equal in magnitude and
opposite in direction.
, A positive point charge Q is fixed on a very large horizontal frictionless
tabletop. A second positive point charge q is released from rest near the
stationary charge and is free to move. Which statement best describes
the motion of q after it is released? Ans✓✓✓ As it moves farther and
farther from Q, its speed will keep increasing.
:)
Three equal negative point charges are placed at three of the corners of a
square of side d as shown in the figure. Which of the arrows represents
the direction of the net electric field at the center of the square?
Ans✓✓✓ C.
The two arrows pointing in opposite directions cancel each other out
leaving the charge between them to pull the the net electric field towards
it
:)
A point charge Q is located a short distance from a point charge 3Q, and
no other charges are present. If the electrical force on Q is F, what is the
electrical force on 3Q? Ans✓✓✓ F
The figure shows two unequal point charges, q and Q, of opposite sign.
Charge Q has greater magnitude than charge q. In which of the regions
DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+||BRAND NEW
Which of the following statements are TRUE?
*Electric field lines near negative point charges circle clockwise.
*In a uniform electric field, the field lines are straight, parallel, and
uniformly spaced.
*The electric field created by a point charge is constant throughout
space.
*The electric force acting on a point charge is proportional to the
magnitude of the point charge.
* Electric field lines near positive point charges radiate outward.
Ans✓✓✓ *In a uniform electric field, the field lines are straight,
parallel, and uniformly spaced.
*The electric force acting on a point charge is proportional to the
magnitude of the point charge
*Electric field lines near positive point charges radiate outward.
Which of the following statements are TRUE?
*Two negative charges repel each other.
*Two positive charges attract each other.
*Electric charge is conserved.
*A positive charge and a negative charge attract each other.
,*A neutral object contains no charge carriers.
*Electric charge is quantized. Ans✓✓✓ *Two negative charges repel
each other
*Electric charge is conserved
*A positive charge and a negative charge attract each other
*Electric charge is quantized
When a point charge of +q is placed on one corner of a square, an
electric field strength of 2 N/C is observed at the center of the square.
Suppose three identical charges of +q are placed on the remaining three
corners of the square. What is the magnitude of the net electric field at
the center of the square? Ans✓✓✓ The magnitude of the net electric
field at the center of the square is 0 N/C.
:)
Is it possible for the electric field between two positive charges to equal
zero along the line joining the two charges? Ans✓✓✓ Yes, regardless of
the magnitude of the two charges.
Two charged objects are separated by some distance. The charge on the
first object is greater than the charge on the second object. How does the
force between the two objects compare? Ans✓✓✓ The charged objects
exert electrostatic forces on each other that are equal in magnitude and
opposite in direction.
, A positive point charge Q is fixed on a very large horizontal frictionless
tabletop. A second positive point charge q is released from rest near the
stationary charge and is free to move. Which statement best describes
the motion of q after it is released? Ans✓✓✓ As it moves farther and
farther from Q, its speed will keep increasing.
:)
Three equal negative point charges are placed at three of the corners of a
square of side d as shown in the figure. Which of the arrows represents
the direction of the net electric field at the center of the square?
Ans✓✓✓ C.
The two arrows pointing in opposite directions cancel each other out
leaving the charge between them to pull the the net electric field towards
it
:)
A point charge Q is located a short distance from a point charge 3Q, and
no other charges are present. If the electrical force on Q is F, what is the
electrical force on 3Q? Ans✓✓✓ F
The figure shows two unequal point charges, q and Q, of opposite sign.
Charge Q has greater magnitude than charge q. In which of the regions
