tolerance

Resistor is a component imposing resistance over the uniform current flow throgh a conductor whenever a voltage is being established between the terminals.Tolerance is one of the factor in resistance which can be viewed just by looking at the fourth band for every resistor.so what is tolerance??????
tolerance is the percentage of error that tend to occur at the production of resistors.this calculation determines the vast difference between the actual value to the measured value of the resistance in the resistor.It doesn affect much on doing hobby projects,but contribute to the greater loss on implementing the same with national level projects.

Inductor

Inductor is also an electronic component which acts as a storage device.It stores the magnetic field.The device has the capability of storing energy due to its own construction.It consists of a cylindrical core that is surrounded by a copper coil wounded on it.This close winding of coil creates a magnetic field across it.We all know that current in a device or element or a circuit can be determined using ampere's law as it states that both current and magnetic field are interrelated to each other.thereby,the varying magnetic field gives us the rate of change of current which opposes the field(by lenz law).thus due to this change of current,induced voltage or emf is obtained which is what actually expressed in terms of inductance.Similar to a capacitor,it filters down the harmonics in a signal and helps us to block ac in circuits.thus the combination of inductors and capacitors produces a tuned circuit.
I hope this would be useful...bye:)

capacitors

As we all know,capacitor is an electrical device which has 2 conducting plates separated by an insulator.The most interesting fact is that it never accepts an external electrical field,but the insulator in it establishes its own static electric field just coz of the potential difference created by the positive and negative charges on two plates placed in parallel to each other.it blocks dc and let only ac which guides in smoothing power supplies.Realtime example is resonant circuits in radios which filter the unwanted signals and pass the required frequency.
Hi friends,i guess the content would be quite useful.If it doesn seem to be precise,please let me know:)

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