Electric Charge...

If Q =2 coloumb and force on it is F=100 newtons , Then the value of field intensity will be

Four equal but like charge are placed at four corners of a square. The electric field intensity at the center of the square due to any one charge is E, then the resultant electric field intensity at centre of square will be

If mass of the electron = 9.1 ×10^-31  Kg. Charge on the electron = 1.6 ×10^-19 coulomb and g = 9.8 m/s² . Then the intensity of the electric field required to balance the weight of an electron is

The electric field intensity at a point situated 4 meters from a point charge is 200 N/C. If the distance is reduced to 2 meters, the field intensity will be

At position of (4i + 3j) by a point charge 5 ×10^-6  C placed at origin will produce electric field of

Two identical point charges are placed at a separation of  l .P is a point on the line joining the charges, at a distance x from any one charge. The field at P is E. E is plotted against x for values of x from close to zero to slightly less than  l . Which of the following best represents the resulting curve ?

A particle of mass m and charge Q is placed in an electric field E which varies with time t ass E = E₀  sinwt. It will undergo simple harmonic motion of amplitude

Four charges are arranged at the corners of a square ABCD, as shown. The force on +ve charge kept at the centre of the square is

Two free positive charges 4q and q are a distance  l  apart. What charge Q is needed to achieve equilibrium for the entire system and where should it be placed form charge q ?

Six charges are placed at the corner of a regular hexagon as shown. If an electron is placed at its centre O, force on it will be