Semiconductor Electronics: Materials, Devices and Simple Circuits

The process of introducing impurities in small quantities into an intrinsic semiconductor is called Doping.
When a silicon $$PN$$ junction is in forward biased condition with series resistance, it has knee vlotage of $$0.6 V$$. Current flow init is $$5 mA$$,when $$PN$$ junction is connected with $$2.6 V$$ battery, the value of series resistance is:-
When all the inputs of a NAND gate are connected together, the resulting circuit is:
Conventional flow of current will always be from -
Each question contains Statement-1 and Statement-2. Choose the correct answer (ONLY ONE option is correct) from the following.