Magnetic Effects Of Current Question 130
Question: For the magnetic field to be maximum due to a small element of current carrying conductor at a point, the angle between the element and the line joining the element to the given point must be [J & K CET 2005]
Options:
A) 0°
B) 90°
C) 180°
D) 45°
Show Answer
Answer:
Correct Answer: B
Solution:
The magnetic field due to small element of conductor of length is given by $ dB=\frac{{\mu_{0}}}{4\pi }\frac{Idl\sin \theta }{r^{2}} $ This value will be maximum when $ \sin \theta =1=\sin 90{}^\circ $ or, $ \theta =90{}^\circ $
BETA
