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
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
- 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
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