Due to the space charge in a diode valve,
(a) the plate current decreases
(b) the plate voltage increases
(c) the rate of emission of thermions increases
(d) the saturation current increases
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A diode valve consists of a region that is negatively charged between the anode and the cathode.
Explanation:
Option (a) is correct .
- A diode regulator or valve consists of a region that is negatively charged between the anode and the cathode, called the region that charges space. This region with negative charges repels that electrons moving from only the cathode and thus reduces the surface current.
- The area has no affect on the surface voltage, the thermion emission rate and also saturation current. Therefore, option (a) the correct option.
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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.
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