Magnetic Effects Of Current Question 21

Question: A vertical straight conductor carries a current vertically upwards. A point P lies to the east of it at a small distance and another point Q lies to the west at the same distance. The magnetic field at P is [MNR 1986; DPMT 2004]

Options:

A) Greater than at Q

B) Same as at Q

C) Less than at Q

D) Greater or less than at Q depending upon the strength of the current

Show Answer

Answer:

Correct Answer: B

Solution:

If distance is same field will be same $ ( \because ,B=\frac{{\mu_{0}}}{4\pi }\cdot \frac{2i}{r} ) $