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The amount of force exerted on a unit positive charge in an electric field is known as _____
Electric potential due to a point charge q at a distance r from the point is _______ (in the air).
In series connection of resistors, what happens to the current across each resistor?
The direction of electric field created by a negative charge is _______
Calculate electric potential due to a point charge of 10C at a distance of 8cm away from the charge.
What is the equivalent resistance of series combination of 3 resistors?
Electric field inside a hollow conducting sphere ______
If the force acting on a point charge kept on the axis of an electric dipole is F, what will be the amount of force if the distance of the point charge is doubled from the dipole?
What is the amount of work done to bring a charge of 4 * 10^{3}C charge from infinity to a point whose electric potential is 2 * 10^{2}V?
Identify the combination which is not a series connection.
Electric field due to a uniformly charged hollow sphere at a distance of r (where r is greater than the radius of the sphere) is __________
If electric field intensity at a certain distance from a dipole on its axis is E1 and at the same distance but on the perpendicular bisector of the dipole is E2, then __________
Two point charges 10C and 10C are placed at a certain distance. What is the electric potential of their midpoint?
Three equal positive charges are kept at the corners of an equilateral triangle. What will be the vector sum of the forces acting on the particles?
Two point charges q_{1} and q_{2} are situated at a distance d. There is no such point in between them where the electric field is zero. What can we deduce?
Electric field intensity at the center of a square is _____ if +20 esu charges are placed at each corner of the square having sidelength as 10 cm.
Pick out the correct statement from the following about parallel combination of resistors.
A ball of 80mg mass and a 2*10^{8} charge is hung with a thread in a uniform horizontal electric field of 2*10^{4}V/m. What is the angle made by the thread with vertical?
If an electric dipole is placed in a uniform electric field ______ will act on the dipole.
Find the electric field intensity at 10cm away from a point charge of 100 esu.
A small charge q is rotated in a complete circular path of radius r surrounding another charge Q. The work done in this process is _________
Give the dimensional formula for magnetic permeability of free space.
Under which of these conditions, the torque acting on the current carrying loop is minimum?
Two point charges of the same polarities are hung with the help of two threads and kept close. The angle between the threads will be _________ if the system is taken to space.
Two point charges 1C and 1C are placed 5mm away from each other forming a dipole. What will be the field intensity at a point 15 cm away from the dipole on its axis?
Two plates are kept at a distance of 0.1m and their potential difference is 20V. An electron is kept at rest on the surface of the plate with lower potential. What will be the velocity of the electron when it strikes another plate?
Two wires of the same material have the same length but their radii are in the ratio of 5:3. They are combined in series, where the resistance of the thicker wire is 12 ohms. Calculate the total resistance of the combination.
An electron of mass m is kept in a vertical electric field of magnitude E. What must be the value of E so that the electron doesn’t fall due to gravity?
An electric dipole is placed inside a cube. What will be the nature of electric flux from the cube surface?
Electric field intensity and electric potential at a certain distance from a point charge is 32 N/C and 16 J/C. What is the distance from the charge?
Three resistors each of 5 ohms are connected in the form of a triangle. What is the resistance between the vertices?
If an electric dipole is placed in a nonuniform electric field ______ will act on the dipole.
8 docs148 tests

8 docs148 tests
