Electric Field Lines Video Lessons

Concept

# Problem: Part A. Which of the following statements are true?Check all that apply.-Electric charge is quantized.-Electric charge is conserved.-A positive charge and a negative charge attract each other.-Two negative charges repel each other.-Two positive charges attract each other.-A neutral object contains no charge.Part B. Which of the following statements are true?Check all that apply.-In a uniform electric field, the field lines are straight, parallel, and uniformly spaced.-Electric field lines near positive point charges radiate outward.-The electric force acting on a point charge is proportional to the magnitude of the point charge.-The electric field created by a point charge is constant throughout space.-Electric field lines near negative point charges circle clockwise.Part C. Which of the following statements are true for electric field lines?Check all that apply.-At every point in space, the electric field vector at that point is tangent to the electric field line through that point.-Electric field lines are continuous; they do not have a beginning or an ending.-Electric field lines are close together in regions of space where the magnitude the electric field is weak and are father apart where it is strong.-Electric field lines can never intersect.-Electric field lines point away from positive charges and toward negative charges.

###### FREE Expert Solution

The electric force is given by Coulomb's law:

$\overline{){\mathbf{F}}{\mathbf{=}}\frac{\mathbf{k}{\mathbf{q}}_{\mathbf{1}}{\mathbf{q}}_{\mathbf{2}}}{{\mathbf{r}}^{\mathbf{2}}}}$, where k is Coulomb's constant, and r is the distance between charges q1 and q2.

Part A.

Charge quantization means that any charge in nature is an integral multiple of the fundamental charge.

Therefore, electric charge is quantized

According to the principle of conservation of charge, the total charge on an isolated system remains constant and independent of the integral changes.

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###### Problem Details

Part A. Which of the following statements are true?
Check all that apply.
-Electric charge is quantized.
-Electric charge is conserved.
-A positive charge and a negative charge attract each other.
-Two negative charges repel each other.
-Two positive charges attract each other.
-A neutral object contains no charge.

Part B. Which of the following statements are true?
Check all that apply.
-In a uniform electric field, the field lines are straight, parallel, and uniformly spaced.
-Electric field lines near positive point charges radiate outward.
-The electric force acting on a point charge is proportional to the magnitude of the point charge.
-The electric field created by a point charge is constant throughout space.
-Electric field lines near negative point charges circle clockwise.

Part C. Which of the following statements are true for electric field lines?
Check all that apply.
-At every point in space, the electric field vector at that point is tangent to the electric field line through that point.
-Electric field lines are continuous; they do not have a beginning or an ending.
-Electric field lines are close together in regions of space where the magnitude the electric field is weak and are father apart where it is strong.
-Electric field lines can never intersect.
-Electric field lines point away from positive charges and toward negative charges.