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WorksheetsPractice Test
Total questions: 32
Worksheet time: 38mins
The magnitude of electric flux through the square is
A
B
C
D
The SI units of A B and C are
A
B
C
D
An electron of mass m charge e falls through distance h meter in a uniform electric field then time of fall is
A
B
C
D
Charge within the cube is
A
B
C
D
4 point charges are placed at the corner of square ABCD of site 10 cm as shown in the figure the force on charge of 1 micro coulomb place at the centre of the square is
A
B
C
D
The total flux through faces of cube of side of length a. If one charge q is placed at corner A
A
B
C
D
If an object of mass 1 kg contain 4 x 10²⁰ atoms. If one electron is removed from every atom of each solid the charge gain by the solid in 1 gram is
A
B
C
D
To identical tennis ball each having mass m and charge Q are suspended from a fix point by threats of length l what is the equilibrium separation when each thread make a small angle theta with the vertical
A
B
C
D
Find electric field in between these two plates
A
B
C
D
Electric field outside the Solid ball
A
B
C
D
When air is replaced by a dielectric medium of constant K. The maximum force of attraction between two charges separated by a distance
increases K-1 times
increases K times
decreases K times
remains constant
work done in an equipotential surface is
positive
negative
zero
Two charged spheres of radii 10 cm and 15 cm are connected by a thin wire. No current will flow, if they have
The same charge on each
The same energy
The same potential
The same field on their surfaces
Solve
A
B
C
D
Solve
A
B
C
D
Solve
A
B
C
D
Figure shows line of constant potential energy in which an electric field is present. The values of potential are written in brackets. Of the point A,B and C the magnitude of the electric field is greatest at the point
A
B
C
Same at all 3 points
Ten charges are placed on the circumference of a circle of radius R with constant angular separation between successive charges. Alternate charges 1 3 5 7 9 have +q and 2 4 6 8 10 have charge -q. Each. The potential and the electric field at centre of the circle will be:
V=0. And. E= 0
Four point charges -q, +q, +q, -q are placed on u axis at y= -2d, y= -d, y= +d, y= +2d respectively. The magnitude of electric field at point on the x-axis at distance x= D where D>>d is proportional to :
1/D³
1/D
1/D⁴
1/D²
Electric field due to infinitively long charged plane sheet is proportional to
σ/kεo
kσ/εo
1/kεo
σ/2εo
total flux over a closed surface is equal to
1/ƹ0
q/ƹ0
kq/ƹ0
zero
Let A,X and B be matrices. Assume A-1 exists.
Solve AX = B for X
X = AB
X = BA
X = A-1B
X = BA-1
9) |An x n|= 3|adj A |=243,then the value of n is ______
4
5
6
7
1)Let A be a non-singular matrix of order (3 × 3). Then |adj A| is equal to _______
|A|
|A|2
|A|3
3|A|
If the
magnitude of intensity of electric field at a distance x on axial
line and at a distance y on
equatorial line on a given dipole are equal, then x:y is
1:1
1:√2
1:2
2√3:1
