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Thursday, 28 March 2013

Rules of Boolean algebra

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Rules of Boolean algebra
Just as we required two basic mathematical operation i.e Addition and subtraction for the mathematical manipulation of ordinary quantities which can possess all continuous value, we require a special algebra known as Boolean algebra for the manipulation of the quantities which have values 0 and 1 and are known as Boolean variables. A unique character of Boolean algebra is that variables used in it can assume only one of the two values i.e. either 0 or 1. Rules Boolean algebra is based on three basic operation namely AND operation, OR operation and NOT operation. 

Wednesday, 27 March 2013

What is digital Logic gates of electronics

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Basic logic gate
The electronic circuit which makes logic decisions is called a digital logic gate. It has one out put and one or more out puts. The out put signal appears only for certain combinations of input signals. Logic gates are the basic building blocks from which most of the digital systems are built up. They implement the hard logic function based on the logical algebra developed by George boole which is called Boolean algebra.

The logic gate is described by definition , symbol, Boolean expression and truth table.

Saturday, 2 February 2013

What is Biot- Savart Law and drive explanation of magnetic field of current

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Biot- Savart Law

The biot-savart law state that magnitude of magnetic field at a point due to current distribution is directly proportional to amount of current  and effective length of conductor and inversely proportional to square of distance between current distribution and point.

Explanation of magnetic field of current due to Biot- Savart Law

Thursday, 20 December 2012

what is concept of centripetal force and define centripetal acceleration

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centripetal acceleration

Centripetal Force

               The force needed to bend normally straight path of particle into circular path is called centripetal                                                  
                     force.It is denoted by Fc.

Centripetal force formula
                                               centripetal force formula
                                         It is also known as inward force or center seeking force.

Saturday, 8 December 2012

what is elastic and inelastic collision

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elastic and inelastic collisionElastic collision 

         A collision in which kinetic energy of the system is conserved is called elastic collision.
In the ideal case when no kinetic energy is lost, the collision is said to be perfectly elastic.
       when a hard ball is dropped onto a marble floor, it rebounds to very nearly the initial height. It loses negligible amount of energy in collision with the floor.

Inelastic collision

       A collision in which kinetic energy of the system is not conserved , is called the inelastic collision.
      When tow tennis balls collide the then after collision , they rebound with velocities less than the velocities before, the inspect. During this process a portion of K.E is lost,partly due to friction as molecules in

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