A long straight wire in the horizontal plane carries a current of 50A in north to south direction. Give the magnitude and direction of `vecB` at a point `2*5m` east of the wire.

50 A current in north to south direction. Give the magnitude and direction of vecB at a point 2.5 m east of the wire.

A long straight wire in the horizontal plane carries as curret of 75 A in north to south direction, magnitude and direction of field B at a point 3 m east of the wire is

A horizontal overhead power lines carries a current of 90 A in east to west direction. What is the magnitude and direction of the magnetic field due to the current 1*5m below the line?

A straight wire carries a current of 6A from south to north direction. What is the magnetic field due to 1cm piece of wire at a point 50cm , 30^@ east of north?

A long straight wire , lying in horizontal plane is carrying 20 A of current from east to west. What is the magnetic field due to the wire at a point (i) 10 cm south from the wire and (ii) 20 cm upward in its vertical plane?

A uniform magnetic field of 1*5T is in cylindrical region of radius 10*0cm with its direction parallel to the axis along east to west. A wire carrying current of 7*0A in the north to south direction passes through this region. What is the magnitude and direction of the force on the wire if (a) the wire intersects the axes, (b) the wire is turned from N-S to north east-south west direction, (c) the wire in the N-S direction is lowered from the axis by a distance 6*0cm ?

Two long, straight wires, one above the other, are separated by a distance 2a and are parallel to the x-axis. Let the y-axis be in the plane of the wires in the direction form the lower wire to the upper wire. Each wire carries current I in the +x-direction. What are the magnitude and direction of the net magnetic field of the two wires at a point in the plane of wires: (a) midway between them? (b) at a distance a above the upper wire? (c) at a distance a below the lower wire?