Question

Assertion The value of current through p-n junction in the given figure will be 10 mA.

Reason In the above figure, p-side is at higher potential then n-side.

• A. Both assertion and reason are true and reason is the correct explanation of assertion
• B. Both assertion and reason are true but reason is not the correct explanation of assertion
• C. Assertion is true but reason is false
• D. Both assertion and reason are false

Answer 1

Answer: (A)

The p-side of p-n junction is taken at higher potential than n-side so, p-n junction is forward biased. Taking its resistance to be zero and appiying Ohm's law.
$ \, \, \, \, \, \, \, I=\frac{V}{R} =\frac{5-2}{300} =10^{-2}A$
$ \, \, \, \, \, \, \, \, =10^{-2} \times 10^{3} mA$
$ \, \, \, \, \, \, \, =10 mA$