Rankers Physics

P-N Junction Diode and its applications: Practice Problem & Solution

For an electronic valve, the plate current I and plate voltage V in the space charge limited region are related as (1992)
I is proportional to $V^{3/2}$
I is proportional to $V^{2/3}$
I is proportional to $V$
I is proportional to $V^2$

Short Solution (Best for NEET):

To solve this problem, we apply the core principles of P-N Junction Diode and its applications. Understanding the underlying formula is key to arriving at the correct answer below:

According to the Child-Langmuir law governing thermionic diodes (electronic valves) in the space-charge limited region, the plate current is directly proportional to the three-halves power of the plate voltage, establishing the relationship $I \propto V^{3/2}$.

Leave a Reply

Your email address will not be published. Required fields are marked *

Similar Practice Questions

Explore conceptually related problems to test your knowledge.

1. Assertion (A): The number of electrons in n-type semiconductor is higher than the number of electrons in a pure silicon semiconductor. Reason (R): The law of mass action is applicable only to n-type semiconductors.
2. For a p-type semiconductor, which of the following statements is true? (2019)
3. p-n junction is said to be forward biased, when (1988)
4. Choose the only false statement from the following (2005)
5. A p-type extrinsic semiconductor is obtained when Germanium is doped with