Magnetic Effects Of Current Question 103
Question: Two long straight wires are set parallel to each other. Each carries a current i in the same direction and the separation between them is 2r. The intensity of the magnetic field midway between them is [Kerala PET 2002; DCE 2002]
Options:
A) $ {\mu_{o}}i/r $
B) $ 4{\mu_{o}}i/r $
C) Zero
D) $ {\mu_{o}}i/4r $
Show Answer
Answer:
Correct Answer: C
Solution:
At P
$ \Rightarrow B_{net}=B_{1}-B_{2} $ Since $ | B_{1} |=| B_{2} | $ So, Bnet = 0
BETA
