$A$ 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
- AGreater than at $Q$
- BSame as at $Q$
- CLess than at $Q$
- DGreater or less than at $Q$ depending upon the strength of the current
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