A straight vertical conductor carries a current. At a point `5cm` due north of it, the magnetic induction is founded to be `20muT` due east. The magnetic induction at a point `10cm` east of its will be

The magnetic induction at any point due to a short magnetic dipole is

At a point on the exial of a magnet,the magnetic at a induction is found to be 80 muT .The induction at a point on its equatorial line at twice the distance of the first point will be

A current i is flowing in a straight conductor of length L. The magnetic induction at a point distant L/4 from its centre will be-

The magnetic induction due to a bar magnet at an axial point is directed along the axis

The magnetic induction at any point due to short magnetic dipole is inversely proportional to its

A long vertical wire carriers a current of 10 amperes flowing upwards through it at place where the horizontal component of the earth's magnetic induction is 0.3 gauss. Then the total magnetic induction at a point 5 cm from the wire due magnetic north of the wire is

A vertical straight conductor carries a current vertically upwards. A point P lies to the east of it at a small distance and another point Q lies to the west at the same distance. The magnetic field at P is

Biot Savart's law deals with the magnetic field induction at a point due to a………………. .

Due to a straight vertical current carrying conductor, a null point occurred at P on east of the conductor. The net magnetic induction at a point 'Q' which is at same distance on north of the conductor is