A long, straight wire carrying a current of 30 A is placed in an external, uniform magnetic field of `4.0 xx 10^-4` T exists from south to north.Find at a point 2.0 away from the wire.

A long straight wire carrying a current of 20A is placed in an external uniform magnetic field of 3xx10^-4T parallel to the current. Find the magnitude of resultant field at a point 2*0cm away from the wire.

A long straight wire carrying current of 30 A is placed in an external uniform magnetic field of induction 4xx10^(4) T . The magnetic field is acting parallel to the direction of current. The magnitude of the resultant magnetic inuduction in tesla at a point 2.0 cm away form the wire is

A long straight wire carrying a current of 25A is placed in an external uniform magnetic field 3*0xx10^-4T parallel to the current. Find the magnitude of the resultant magnetic field at a point 1*5cm away from the wire.

A long, straight wire carrying a current of 1.0 A is placed horizontally in a uniform magnetic field B= ( 1.0 xx 10^-5) T pointing vertically upward. Find the magnitude of the resultant magnetic field at the points P and Q, both situated at a distance of 2.0 cm from the wire in the same horizontal plane.

A long vertical wire carrying a current of 10A in the upward direction is placed in a region where a horizontal magnetic field of magnitude( 2.0 xx 10^-3) T exists from south to north. Find the point where the resultant magnetic field is zero.

A long, vertical wire carrying a current of 10A in the upward direction is placed in a region where a horizontal magnetic field of magnitude 2.0xx10^-3T exist from south to north. Find the point where the resultant magnetic field is zero.

A long straight wire carries a current of 35A . What is the magnetic of the field vecB at a point 20cm from the wire?