Electric capacitance When a conductor is charged, its potential increases. q ∝ V q= C.V Where C is a constant. Which is called the electric capacitance of the conductor. C=q/V coulomb/volt Electric capacitance of spherical capacitor Construct a spherical capacitor whose radius is a and total charge is q. If this charge is considered to … Read more
Electric potential due to electric dipole 1. Electric potential at a point in axial position of electric dipole Suppose we want to calculate the electric potential at a point P situated at a distance r from the centre O of an electric dipole having dipole moment P Electric potential at point P due to +q … Read more
Electric potential is a physical quantity which determines the direction of flow of electric charge. That is, If two conductors with different electric potentials are brought in contact with each other, then the charge will flow until the potential of both the objects becomes equal. Positive charge always flows from high potential to low potential … Read more
Electric potential difference The ratio of the work done in taking a test charge from one point to another in an electric field to the test charge is called the potential difference between the points. If the test charge is q₀, then the work done in taking it from point (b) to (a) is W. … Read more
The graphical representation of rectilinear motion is done in the following relations : x-t (distance-time) graph v-t (velocity-time) graph a-t (acceleration-time) graph x-t (distance-time) graph In this graph, time is displayed along the x-axis and various positions of the object are displayed along the y-axis. Use- The motion of a stationary object, an object moving … Read more
When a particle is moving with uniform acceleration along a straight line, then the mathematical equation by which the relationships of the quantities like velocity, acceleration, displacement etc. Of such particle are expressed is called the equation of motion of the object. The following equations of motion are : v=u+at s=ut+at²/2 v²=u²+2as Deduction of equations … Read more
Electric flux The number of the magnetic lines of force passing through a surface is called as electric flux. That is, Electric flux is the measure of the number of magnetic lines of force passing through a surface and it represents the intensity of the electric field as a ratio of the number of electric … Read more
Gauss’s law According to this law, The electric flux Φₑ passing through a closed surface is 1/∈₀ times the total charge q enclosed by that surface. That is, total electric flux Φₑ = q/∈₀ where ∈₀ is the permittivity of vacuum or, Φₑ =∫Φ→E.→A = q/∈₀Gauss’s theorem in integral form. Φₑ = q/∈₀ Where ∈₀ … Read more
Consider a positive charge +q due to which the intensity of the electric field at a point P is to be calculated. To find the intensity of electric field at point P, consider the positive test charge qₒ situated at that point. Therefore, Electric force on positive test charge qₒ F = [1/4π€₀].[q.q₀/r²] Newton Electric … Read more
Intensity of electric field near a charged plane sheet of infinite extension Suppose that on one surface of a uniformly charged flat sheet of infinite extension whose surface density is δ. Near a positively charged flat sheet of infinite extension, there is a point P at a distance r from the sheet at which the … Read more
