Channel length modulation
For N channel Vds is positive and Vgs is negative
For P channel. Vds is negative and Vgs is positive
Case1) Vgs = zero volts
Case2) Vgs magnitude >Vds magnitude
Case3) Vgs magnitude < Vds magnitude
Case4) Vgs is applied inverted that of Vds ( BUT IN MAGNITUDE Vds is GREATER THAN Vgs )
