NEET Solved Paper 2019 Question 26
Question: A cylindrical conductor of radius R is carrying a constant current. The plot of the magnitude of the magnetic field, B with the distance, d, from the centre of the conductor, is correctly represented by the figure: [NEET 5-5-2019]
Options:
A) 
B) 
C) 
D) 
Show Answer
Answer:
Correct Answer: A
Solution:
$ B _{inside}=\frac{{\mu_0}id}{2\pi R^{2}} $
$ B _{in}\propto d $
$ B _{out}=\frac{{\mu_0}i}{2\pi d} $
$ B _{out}\propto \frac{1}{d} $
