(1) State the factors on which the magnitude of the magnetic field (produced) due to a current through a strainght conductor depend . (2) Draw the pattern of magnetic field lines due to a current through a straight conductor .

Explanation

(1) Factors on which the magntidue of magnetic field produced by a current - carrying straight conductor depends on :
(i) magntidue of current passing through the conductor .
(ii) distance of the magnetic compass from the straight conductor .
(2)