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Question
A triode is operated in the linear region of its characteristics. If the plate voltage is slightly increased, the dynamic plate resistance will __________ .
Options
increase
decrease
remain almost the same
become zero
Solution
remain almost the same
Dynamic resistance (rP) is given by,
The triode is operating in the linear region. Therefore,
Change in the value of voltage = Change in the value of current
So, (rP) will remain almost the same.
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