1.
The flux through a cube of side 'l' if a point charge q at one of its corners, is
2.
When a glass rod is rubbed with the silk cloth, the charge acquired on the glass rod is due to
3.
What is the angle between electric lines of force and an equipotential surface?
4.
What will be the complete energy released in discharging a condenser of capacity 2 μF when connected with 10 V battery?
5.
A dipole each charge + 2 C and -2 C are placed at positions position (î – ĵ ) m and (î + ĵ) m. The electric field vector is (î + ĵ -k̂) N/C. The dipole moment is
6.
Two charges 2 μ C and 8 μ C are olaced at position x = 0 m and x = 2 m. At what distance from the charge 2 μ C, a third charge Q is placed so that Q is in equilibrium?
7.
A point charge q experiences a force in the electric field of magnitude E. What is the force act on the charge?
8.
The magnitude of electric field at a point of position (î + k̂) m due to a point and static charge 1 μC at position (2 ĵ) m is
9.
A dipole is placed in the uniform electric field. The potential energy is minimum in the position of
10.
A dipole of dipole moment p is placed in the uniform external electric field of magnitude E. The minimum potential energy in unstable equilibrium is
11.
An electric field of magnitude is perpendicular to a dipole of moment magnitude p. The torque acts on it is
12.
The net force acting on a dipole placed in external electric field is
13.
The surface charge density 1 C charge of surface area 0.5 m² is
14.
A dipole and -2 C charge is placed inside a sphere. Now the radius of the sphere is reduced to half. What is the flux passing through it?
15.
What is the shape of a graph plotted between electric field and perpendicular distance r due an infinite thin plane sheet?
16.
Two charge +Q and -Q are placed on inner and outer concentric spherical surfaces of radii r and 2r respectively. What is the amount of electric field at a distance 1.5 r and 2.5 r?
17.
An electric field (magnitude E) makes an angle 30⁰ from the plane x-y of a square coil of area A. The electric flux passes through the surface is
18.
Identify the correct statements.
19.
The electric field at distance r perpendicular to infinite line charge is
20.
The SI unit of electric flux is
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