A student performs an experiment to study the magnetic effect of current around a current-carrying straight conductor. He reports that: (i) the direction of deflection of the north pole of a compass needle kept at a given point near the conductor remains unaffected even when the terminals of the battery sending the current in the wire are interchanged. (ii) For a given battery current, the degree of deflection of a N-pole decreases when the compass is kept at a point farther away from the conductor. Which of the above observations is correct and why?
