question_answer

An experiment is performed to determine the I - V characteristics of a Zener diode, which has a protective resistance of \[R=100\Omega ,\]and maximum power of dissipation rating of 1W. The minimum voltage range of the DC source in the circuit is :   JEE Main Online Paper (Held On 09 April 2016)

A) \[0.12V\]                 

B) \[0.5V\]

C) \[0.24\]

D) \[0 . 8V\]

Correct Answer: C

Solution :

\[{{P}_{zener}}=(v-100i)i=1\] \[vi-100{{i}^{2}}=1\]i must be real \[{{v}^{2}}-4(100)\ge 0\] \[v\ge 20\]