Which one is correct relation for thermionic emission
  • A$J=A T^{1 / 2} e^{-\phi / k T}$
  • B$J=A T^2 e^{-\phi / k T}$
  • C$J=A T^{3 / 2} e^{-\phi / k T}$
  • D$J=A T^2 e^{-\phi / 2 k T}$
[RPMT 2000]
art

Download our app
and get started for free

Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*

Similar Questions

  • 1
    Holes are charge carriers in
    View Solution
  • 2
    In the middle of the depletion layer of a reverse-biased $P N$ junction, the
    View Solution
  • 3
    $N P N$ transistor are preferred to $P N P$ transistor because they have
    View Solution
  • 4
    Plate resistance of two triode valves is $2 k \Omega$ and $4 k \Omega$, amplification factor of each of the valves is $40.$ The ratio of voltage amplification, when used with $4 k \Omega$ load resistance, will be
    View Solution
  • 5
    In a semiconductor, the concentration of electrons is $8 \times 10^{14} / cm ^3$ and that of the holes is $5 \times 10^{12} cm ^3$. The semiconductor is
    View Solution
  • 6
    If $N_P$ and $N_e$ be the numbers of holes and conduction electrons in an extrinsic semiconductor, then
    View Solution
  • 7
    An oscillator is nothing but an amplifier with
    View Solution
  • 8
    In a $P-N$ junction diode if $P$ region is heavily doped than $n$ region then the depletion layer is
    View Solution
  • 9
    The electrical circuit used to get smooth $d c$ output from a rectifier circuit is called
    View Solution
  • 10
    The slope of plate characteristic of a vacuum tube diode for certain operating point on the curve is $10^{-3} \frac{ mA }{ V }.$ The plate resistance of the diode and its nature respectively
    View Solution