Two uniformly large parallel thin plates having charge densities `+sigma and -sigma` are kept in the X-Z plane at a distance 'd' apart. Sketch an equipotential surface due to electric field between the plates. IF a particle of mass m and charge -q remains stationary between the plates, what is the magnitude and direction of this field?

Two parallel metal plates having charge +Q and -Q face each other at a certain distance between them. If the plates are now dipped in kerosene oil tank, the uniform electric field between the plates will

Two infinite parallel planes have uniform charge densities +-sigma . What is the electric field in the region between the planes

A water particle of mass 10 mg and having a charge of 1.5 xx 10^-6C stays suspended in a room. What is the magnitude and direction of the electric field in the room?

Two large flat parallel sheets A and B having uniform surface charge densities sigma and -sigma are held as shown in the figure graphically, represent the variation of electric field due to the two sheets as one move from the point O to P.

A dipole, with its charges, -q an +q, are located at the ponit (0,-b,0) and (0,+b,0), is present in uniform electric field E. the equipotential surfaces of this field are planes parallel to the YZ-planes. What is the direction of the electric field E?

The plates of a parallel plate capacitor are 50m^2 and one mm apart apart when it is connected to a 45 V battery what is the electric field between the plates?

What is meant by a dielectric ? Explain how it reduces the electric field between two oppositely charged plates, if the space between them be filled with it?

Two parallel plate air capacitors have their plate areas 100 and 500 cm^(2) respectively. If they have the same charge and potential and the distance between the plates of the first capacitor of 0.5 mm, what is the distance between the plates of second capacitor ?

The Millikan oil-drop experiment enabled the charge on the electron to be deterined. Two parallel metal plates P and Q are situated in a vaccum. The plates are horizontal and separated by a distance of 5.4 mm, as illustrated in fig. The lower plate P is earthed. The potential difference between the plates can be varied. An oil droplet of mass 7.7 xx 10^-15 kg is oserved to remain stationary between the plates , when palte Q is a t a potential of +850 suggest why plates p and Q must be parallel and horizontal and calcualte the charge with its gin, on the oil droplet.

Two infinite parallel planes have uniform charge densities +-sigma . What is the electric field outisde the plates? In what way does the infinite extension of the planes simplify your derivation?