Basic Electronics
a Nature of the
metal
Surface area of
the metal
By increasing the temperature and surface area of the
cathode, rate of thermionic emission ean enhance.
a When cathode
rays are created then they move towards the anode of the discharge tube which
shows that they are negatively charges.
b When an electric
field is applied in the discharge tube then cathode ray experiences an
attractive force toward the positive plate of the applies electric field which
also shows that they have negative charge
c They are
deflected in a magnetic field opposite to the direction of positive charge
This shows that electrons have negative charge. Strength of
magnetic field and speed of electron enhance electron deflection. If we
increase the angle between velocity of electron within range 00 to
90o then it will enhance the deflection of
electron because magnetic force is equal to F= qv Bsin0. If we increase the straight of magnetic filed then it will enhance the deflection of electron.
If we want to compare the logic operation X=A.B with useal
operation of mutilation. We will find same result as in logic operations with
same inputs, but if the imputs changes from 0 to 1 the logic operation will
failed to give result. The combination of AND gate with NOT gate is called NAND
gate. In NAND gate the output of AND gate is inverted. Therefore NAND gate is
the reciprocal of AND gate.
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