Question Name: Polarization of a block of material due to dipole, 7 Before selec

Question

Question Name: Polarization of a block of material due to dipole, 7

Before selecting answers to the following questions, draw your own diagram of this situation, showing all the fields and charge distributions requested.
Answer the following question by selecting either a direction (a-j) or an orientation of a polarized molecule (1-10) from the diagrams below.

Which of the arrows shown best indicates the direction of the electric field at location B, due only to the plastic block?

Choose correct answers:

a

b

c

d

e

f

g

h

j

Question Name: Polarization of a block of material due to dipole, 8

Before selecting answers to the following questions, draw your own diagram of this situation, showing all the fields and charge distributions requested.
Answer the following question by selecting either a direction (a-j) or an orientation of a polarized molecule (1-10) from the diagrams below.

The magnitude of the electric field at B due to the plastic is less than the magnitude of the electric field at B due to the dipole.
Which of the arrows shown best indicates the direction of the net electric field at location B?

Choose correct answers:

a

b

c

d

e

f

g

h

j

Explanation / Answer

For QUESTION-1:

ANSWER is c. c arrow represents the the direction of electric filed at the location B

Explanation:The electric field is along the perpendicular bisector of the dipole opposites the moment of the dipole.And also if we draw the field line all the field lines are coming from positive charge and end at negative charge,so at the point B the direction of field indicates towards right(c arrow).The field lines represent as those of a bar magnet.

QUESTION 2:

ANSWER is g. g arrow indicates electric field direction in this case.

Explanation:The molecules in the plastic block,and therefore in the sense the block itself, are polaraizedoppositely to the dipole.This means the field lines due to plastic block will point in the opposite direction from those due to dipole,and at location B,the electric field due to plastic is pointing to the left (g arrow).

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