12 ) For which of the following gap distance is the discharge current measured between anode and cathode not self-sustained? Assume that the cathode is grounded and a voltage of 20 kV (DC) is applied to the anode. Townsend's first and second ionization coefficient for the gas between anode and cathode is given as 5 and 0.002, respectively a. 2.18 cm b. 1.12 cm c. 5.6667 cm d. 1.55 cm e. 1.63 cm

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12) For which of the following gap distance is the discharge current
measured between anode and cathode not self-sustained? Assume
that the cathode is grounded and a voltage of 20 kV (DC) is applied
to the anode. Townsend's first and second ionization coefficient for
the gas between anode and cathode is given as 5 and 0.002,
respectively
а.
2.18 cm
b. 1.12 cm
С.
5.6667 cm
d. 1.55 cm
е.
1.63 cm
Transcribed Image Text:12) For which of the following gap distance is the discharge current measured between anode and cathode not self-sustained? Assume that the cathode is grounded and a voltage of 20 kV (DC) is applied to the anode. Townsend's first and second ionization coefficient for the gas between anode and cathode is given as 5 and 0.002, respectively а. 2.18 cm b. 1.12 cm С. 5.6667 cm d. 1.55 cm е. 1.63 cm
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