AC plate resistance of a diode valve at equilibrium is?
a. Zero
b. Infinite
c. Depends upon plate potential
d. None of these
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The number by which the a-c grid voltage has to be multiplied to give the input voltage in the equivalent circuit, is called the amplification factor (or magnification factor) of the tube. The value of the fixed resistor in the equivalent circuit, is called the plate resistance or a-c resistance of the tube.
ac plate resistance of a diode value at equilibrium will be zero
option a is correct
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