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Question (1)

QN0038859

In the figure, a very large plane sheet of positive charge is shown. and are two points at distance and from the charge distribution. If is the surface charge density, then the magnitude of electric fields and at and respectively are :

(A)
(B)
(C)
(D)

Correct Answer: C

Explanation:

Electric field due to infinite sheet is given by ,

clearly is independent of distance

So,

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Question (2)

QN0038860

3 infinitely long charge sheets are placed as shown in figure. electric field at point is

(A)
(B)
(C)
(D)

Correct Answer: C

Explanation:

Figure shows the electric fields due to the sheets 1,2 and 3 at point . The direction of electric fields are according to the charge on the sheets (away from positively charge sheet and towards the negatively charged sheet and perpendicular).

The total electric field

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Question (3)

QN0038861

Two parallel large thin metal sheets have equal surface densities of opposite signs. The electric field between these sheets is-

(A)
(B)
(C)
(D)

Correct Answer: D

Explanation:

Surface Charge density,

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Question (4)

QN0038862

A rod of length and radius carries a negative charge of spread uniformly over it surface. Electric field near the mid-point of the rod, at a point on its surface is NCERT Page-38/N-34

(A)
(B)
(C)
(D)

Correct Answer: C

Explanation:

Here,

Linear charge density,

Electric field,

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Question (1)

In the figure, a very large plane sheet of positive charge is shown. and are two points at distance and from the charge distribution. If is the surface charge density, then the magnitude of electric fields and at and respectively are :

Explanation:

Link:

Question (2)

3 infinitely long charge sheets are placed as shown in figure. electric field at point is

Explanation:

Link:

Question (3)

Two parallel large thin metal sheets have equal surface densities of opposite signs. The electric field between these sheets is-

Explanation:

Link:

Question (4)

A rod of length and radius carries a negative charge of spread uniformly over it surface. Electric field near the mid-point of the rod, at a point on its surface is NCERT Page-38/N-34

Explanation:

Link:

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