Magnetic Effects Of Current Question 207
Question: Two long parallel copper wires carry currents of 5A each in opposite directions. If the wires are separated by a distance of 0.5m, then the force between the two wires is [EAMCET (Engg.) 2000]
Options:
A) $ {{10}^{-5}}N,, $ attractive
B) $ {{10}^{-5}}N,, $ repulsive
C) $ 2\times {{10}^{-5}}N,, $ attractive
D) $ 2\times {{10}^{-5}}N,, $ repulsive
Show Answer
Answer:
Correct Answer: B
Solution:
$ F={{10}^{-7}}\frac{2i_{1}i_{2}}{a}={{10}^{-7}}\times \frac{2\times 5\times 5}{0.5}={{10}^{-5}}N $ (repulsive)
BETA
