In a triode valve - Vidyadip

MCQ

In a triode valve

A
If the grid voltage is zero then plate current will be zero
B
If the temperature of filament is doubled, then the thermionic current will also be doubled
✓
If the temperature of filament is doubled, then the thermionic current will nearly be four times
D
At a definite grid voltage the plate current varies with plate voltage according to Ohm's law

✓

Answer

Correct option: C.

If the temperature of filament is doubled, then the thermionic current will nearly be four times

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