Question

( a)a magnetic compass show election win place near a current carrying wire how will the deflection of the compass get affected if current in the wire is increased support your answer with a reason
(B) ab is a current carrying conductor in the plane of paper as shown in figure what are the direction of magnetic field produced by it at point p and q are given R1 is greater than R2 where will the strength of field be larger
(c) what does the direction of thumb indicate in the right hand thumb rule in what way this rule is different from Fleming left hand rule​

Answer 1

By applying Right-hand thumb rule, the direction of Magnetic field is into the plane of the paper at P and coming out from the plane of paper at the point Q.

The magnitude of magnetic field B is inversely proportional to distance r.

Now r1 > r2, or point Q is closer than point P, so the magnetic field is stronger at point Q and weaker at point P.