P N Junction

As,

R%3D%5Crho%20l%20%2F%20A%3D%5Crho%20l%20%2F%5Cleft(%5Cpi%20d%5E%7B2%7D%20%2F%204%5Cright)

Resistance for a given material is directly proportional to the length and inversely proportional to the square of diameter of round faces. So for the second rod, diameter is

2.0%20%2F%200.6%3D10%20%2F%203

times diameter of the first one. and, length is

1.0%20%5C%2Cmm%20%2F%201%20%5C%2Cm%20%3D1%20%2F%201000

times the length of first one. Thus resistance of the second rod is,

%5Cfrac%7B1%20%2F%201000%7D%7B(10%20%2F%203)%5E%7B2%7D%7D%3D9%20%5Ctimes%2010%5E%7B-5%7D

times the resistance of the first one. So resistance of the second rod is

3%20%5Ctimes%2010%5E%7B-3%7D%20%5Ctimes%209%20%5Ctimes%2010%5E%7B-5%7D%3D2.70%20%5Ctimes%2010%5E%7B-7%7D%20%5C%2C%5COmega

High-Yield Trend

Chapter Questions
1 MCQs

Official Solution

P N Junction

High-Yield Trend

Chapter Questions 1 MCQs

Official Solution

Chapter Questions
1 MCQs