Magnetic Effects Of Current Question 66
Question: The magnetic induction at any point due to a long straight wire carrying a current is [MP PMT/PET 1998]
Options:
A) Proportional to the distance from the wire
B) Inversely proportional to the distance from wire
C) Inversely proportional to the square of the distance from the wire
D) Does not depend on distance
Show Answer
Answer:
Correct Answer: B
Solution:
$ B=\frac{{\mu_{0}}i}{2\pi r} $ or $ B\propto \frac{1}{r} $
BETA
