JEE-Physics - ALLEN

[Pages:29]JEE-Physics

ELECTROSTATICS

EXERCISE # (O)

1. In the given figure flux through surface S is & through S is . Which is correct ?

1

1

2

2

(A) =

1

(B) >

1

(C) <

1

(D) None of these

2. The volume charge density as a function of distance X from

one face inside a unit cube is varying as shown in the figure.

The total flux (in S.I. units) through the cube if ( = 8.85 ? 0

10?12 C/m3) is

(A) 1/4

(B) 1/2

(C) 3/4

(D) 1

density (in cm3) 0

x (in m)

1/4

3/4 1(in m)

3. In a spherical distribution the charge density varies as (r) =

A/r for a < r ................
................

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