The direction of the magnetic field produced by a linear current is given by

To find the direction of the magnetic field produced by a current -carrying wire, a magnetic needle is placed at different positions as shown in the following figure . Which position of the magnetic needle corresponds to the correct direction of the magnetic field ?

On what factor does the direction of the magnetic field produced by a current - carrying straight wire depend ?

The direction of magnetic field produced on passing electric current in a conductor is determined by

Name and state the two rules for finding the direction of magnetic field produced by an electric current through a straight conductor.

PQ is a current carrying conductor in the plane of the paper as shown in the figure below. (i) Find the directions of the magnetic fields produced by it at points R and S? (ii) Given r_(1)gt r_(2) , where will the strength of the magnetic field be larger? Give reasons (iii) If the polarity of the battery connected to the wire is reversed, how would the direction of the magnetic field be changed? (iv) Explain the rule that is used to find the direction of the magnetic field for a straight current carrying conductor.