Electric field and force on charges

The magnitude of the electric field on the surface of a sphere of radius r having a uniform surface charge density is

A metallic solid sphere is placed in a uniform electric field. In Fig. , which path will the lines of force follow?

What is the direction of the electric field at the dot?

In the figure, the point charges are located at the corners of an equilateral triangle 22 cm on a side.

Find the magnitude of the electric field in N/C at the location of q_a given that q_b=11.1 uC and q_c = -5.3 uC

What is the charge on each ball. Given k = 9 × 10⁹ Nm²C^-2 and take g = 10 ms^-2.

Which of the following figures represent the electric field lines due to a single negative charge?

Two point charges q₁ = 2 mC and q₂ = 1 mC are placed at distances b = 1 cm and a = 2 cm from the origin on the y and x axes as shown in Fig. The electric field vector at point P (a, b) will subtend an angle q with the x-axis given by

An electric dipole placed with its axis inclined at an angle to the direction of a uniform electric

An electric dipole placed with its axis in the direction of a uniform electric field experiences

An electric dipole placed in a non-uniform electric field experiences

Electric field lines provide information about

 The force per unit charge is known as

The magnitude of electric field at a distance x from a charge q is E. An identical charge is placed at a distance 2x from it. Then the magnitude of the force it experiences is

Two point charges q and 4q are held at a separation r. The electric field due to them is zero at a distance

The electric field due to an extremely short dipole at a distance r from it is proportional to