Magnetic Effects Of Current Question 31
Question: A solenoid of 1.5 metre length and 4.0 cm diameter posses 10 turn per cm. A current of 5 ampere is flowing through it. The magnetic induction at axis inside the solenoid is [CPMT 1990]
Options:
A) $ 2\pi \times {{10}^{-3}},tesla $
B) $ 2\pi \times {{10}^{-5}},Tesla $
C) $ 4\pi \times {{10}^{-2}},Gauss $
D) $ 2\pi \times {{10}^{-5}},gauss $
Show Answer
Answer:
Correct Answer: A
Solution:
$ B={\mu_{o}}ni=4\pi \times {{10}^{-7}}\times 5\times 1000=2\pi \times {{10}^{-3}} $ Tesla
BETA
