Qstnid -Ii-5-the Anode Of A Thermionic Diode Is Connected To The Negative Terminal Of A Battery And The Cathode To Its Positive Terminal. - 41: Electric Current Through Gases - Cbse-xi-physics

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CBSE-XI-Physics

41: Electric Current through Gases

with Solutions - page 2

Qstn# ii-5 Prvs-Qstn Next-Qstn

#5
The anode of a thermionic diode is connected to the negative terminal of a battery and the cathode to its positive terminal.
(a) No appreciable current will pass through the diode.
(b) A large current will pass through the diode from the anode to the cathode.
(c) A large current will pass through the diode from the cathode to the anode.
(d) The diode will be damaged.
digAnsr: a
Ans : (a) No appreciable current will pass through the diode.
If the anode is given a negative potential relative to the cathode, the electrons are pushed back to the cathode. Hence, no current will flow through the diode.
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