Question

List the factors on which the magnetic field produced by a current carrying straight conductor depends. State the rule which gives the direction of its magnetic field. Draw the pattern of magnetic field lines due to a straight current carrying conductor

Answer 1

Factors on which the magnetic field produced by a straight current-carrying conductor depends:

1. Current in the conductor: The magnitude of the magnetic field produced is directly proportional to the current passing through the wire.
2. Distance from the wire: The magnitude of the magnetic field produced is inversely proportional to the distance from the wire.

The Right Hand Thumb rule gives the direction of the magnetic field.

Answer 2

Factors on which the magnetic field produced by a current carrying conductor depends :
(i) Current passing through the conductor. 
(ii) Distance of the magnetic compass from the conductor. 
Right Hand Thumb Rule gives the direction of magnetic field.