Electric field lines

In the following question a statement of assertion (A) is followed by a statement of reason (R ) A : An equipotential surface is normal to electric field lines. R : Potential increases in direction of electric field .

The diagram shows the electric field lines produced by an electrostalic focusing device. Which one of the following diagrams best shows the corresponding equipotential lines? The electric field are shown as broken lines on each of the diagrams.

A positive point charge (+q) is kept in the vicinity of an uncharged conducting plate. Sketch electric field lines originating from the point on to the surface of the plate. Derive the expression for the electric field at the surface of a charged conductor.

The number of electric field lines crossing an area DeltaS is n_1 when Delta vecS||vecE , while the number of field lines crossing the same area is n_2 when DeltavecE makes an angles of 30^@ with vecE . Then

STATEMENT -1 : When a charged particle is released from a rest in a region of electric field ,its path will represent the electric field lines in the region. and STATEMENT-2 : The force experienced by the charged particle will be along a tangent drawn to the electric fieldline at a point.

Two charged thin infinite plane sheets of uniform surface charge density sigma_(+) and sigma_(-) where |sigma_+| gt|sigma_(-)| , intersect right angle Which of the following best represents the electric field lines for this system:

Fig. shows three electric field lines. (a) What is the direction of the electrostatic force on a positive test charge placed at points A and B ? (b) At which point A or B, will the acceleration of the test charge be greater if the charge is released? .

STATEMENT-1 : The electric field lines either originate from or terminate on conducting surface normally . STATEMENT-2 : The number of lines of forces that originals from or terminate on a charge is proportional to the magnitude of the charge. STATEMENT -3 : The field lines always start on positive charges and terminate on negative charge.

The following diagram shows the electric field lines between two opposite charges. The positive charge is indicated by the black circle, the negative charge by the white circle. An electron strarting from rest at the indicated position (X) , and accelerated to high speed by the electric field will follow most likely which trajectory?

A small metal sphere carrying charge +Q is located at the centre of a spherical cavity inside a large uncharged metallic spherical shell as shown in the figure. Use Gauss’s law to find the expressions for the electric field at points p_(1) and p_(2) . Also draw the pattern of electric field lines in this arrangement.