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WorksheetsElectrostatics
Total questions: 20
Worksheet time: 14mins
The value of electrostatic coulomb force
Increases with the increase in separation between the charges
Increases with the increase in magnitude of charges
Increases with the increase in the value of dielectric constant.
None of these
A charge of magnitude Q is divided into two parts q a d Q-q such that the two parts exert maximum force on each other. What will be the ratio Q/q.
4
6
3
2
In coulomb's law on what factor the value of proportionality constant K depends on
Width of the medium between charges
Type of charges in consideration
Value of K is constant for all kind of medium
Nature of the medium.
For equilibrium of a dipole in a uniform electric field the angle between P and E
90°
180° only
0° and 180°
Only 0°
Which one can be electric dipole moment
Cm
C/m
Cm^2
m/C
The electric field outside the uniformly charged spherical shell is same as that of a point charge placed at
Surface
Centre
Infinite
Any position
A conducting sphere has electric field vector pointing towards it. The net charge on the sphere is
Negative
Positive
Zero
Cannot be determined
The electric field at a point due to a charged conducting sphere of radius R is E. The electric field due to the same sphere at distance R/2 from its centre is
E
E/4
4E
Zero
The electric field just outside the surface of a charged conducting sphere is
Zero
1/2€ times the surface density of charge
1/€ times the surface density of charge
2€ times the surface density of charge
The method of enclosing a sensitive electrical equipment by a metallic cover cover is called
Electrostatic discharging
Electrostatic shielding
Electrostatic screening
Electrostatic grounding
An electric field of intensity 20 N/C is acting along x axis. A square surface of side 10 cm is placed in yz plan the fix through the surface is
2000 Nm^2/C
2 Nm^2/C
0.2Nm^2/C
20Nm^2/C
A point charge +q is placed from an isolated conducting plane. The field at a point P on the other side of the plane is
Zero
Directed perpendicular and towards the plane
Directed radially outward the point charge.
Directed perpendicular and away from the plane
An arbitrary surface encloses a dope of moment 0.16 Cm. The flux through the surface is (a)
A charge of 8.85 pC is placed inside a sphere. Net flux through it is
1
2
1000
40
Electric potential at a distance 1m from a point charge is 9 nV. The magnitude of the charge is
2 mC
1 C
2 C
1 nC
eV is the unit of
Electric Potential difference
Electric Potential
Electric Potential energy
Electric power
A charge of 2 mC is placed on an equipotential surface of 3 volt. Potential energy of the charge is
3/2 mCV
6 J
6 mJ
2/3 mJ
What work has to be done by the external force to move a charge of 2C from P to Q as shown in figure above?
3 J
6 J
-3J
-6J
In the figure above the electric potential at the centre of the circle is
900 GV
900 MV
900 TV
0 V
The potential difference VP - Vq is
Positive
Negative
Potential can not be negative
Either positive or negative
