magnetic effect of current

Consider the following statements about an electric bell: I. An electric bell works on the principle of magnetic effect of current II. An electric bell consists of an electromagnet III. An electric bell produces sound continuously Among the given statements,

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?

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