Vertical straight conduct 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
A. Greater than that 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.
Answer:B
Vertical straight conduct 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
A. Greater than that 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.