Magnetic Effects Of Current Question 77
Question: A neutral point is obtained at the centre of a vertical circular coil carrying current. The angle between the plane of the coil and the magnetic meridian is [SCRA 1998]
Options:
A) 0
B) 45°
C) 60°
D) 90°
Show Answer
Answer:
Correct Answer: D
Solution:
Magnetic meridian is a vertical N-S plane, the earth?s magnetic field $ (B_{H}) $ lies in it. (For more details see magnetism). To obtain neutral point at the centre of coil, magnetic field due to current and $ B_{H} $ must cancel each other. Hence plane of the coil and magnetic meridian must be perpendicular to each other as shown
BETA
