Magnetic Effects Of Current Question 56
Question: If the strength of the magnetic field produced 10cm away from a infinitely long straight conductor is $ {{10}^{-5}},Weber/m^{2} $ , the value of the current flowing in the conductor will be [MP PET 1996]
Options:
A) 5 ampere
B) 10 ampere
C) 500 ampere
D) 1000 ampere
Show Answer
Answer:
Correct Answer: A
Solution:
$ B=\frac{{\mu_{0}}}{4\pi }\cdot \frac{2i}{r} $
Þ $ {{10}^{-5}}={{10}^{-7}}\times \frac{2i}{(10\times {{10}^{-2}})} $
Þ $ i=5A $
BETA
