Quite often, connecting wires carrying currents in opposite directions are twisted together in using electrical appliances. Explain how it avoids unwanted magnetic fields.

STATEMENT-1: In electric circuits, wires carrying currents in opposite directions are often twisted together. because STATEMENT-2: The magnetic field in the surrounding space of a twisted wire system is not precisely zero because the wires are not in the same location in space.

How does use of a fuse-wire protect electrical appliances ?

Two long wires carrying same currents in opposite directions are placed at separation D as shown.Predict variation of magnetic field as one moves from the point O and A

The two long, straight wires carrying electric currents in opposite directions. The separation between the wires is 5.0 cm. Find the magnetic field at a point P midway between the wires.

Two long straight wires, each carrying a current I in opposite directions are separated by a distance R . The magnetic induction at a point mid way between the wire is

A current carrying circular coil is bent so as to convert it into a double loop, both the loops being concentric and are carrying current in the same direction. If B is the initial magnetic field at the centre, the final magnetic field at the centre will be

The magnetic field midway between two parallel current carrying wires, carrying currents I and 2i in same direction is B. If the current in the wire with current I is switched off, the magnetic field will become

Two parallel wires P and Q placed at a separation d= 6 cm carry electric currents i_1= 5A and i_2= 2A in opposite directions as shown in figure. Find the point on the line PQ where the resultant magnetic field is zero.

In fig. two long parallel wires carry equal currents in opposite directions. Point O is situated midway between the wires and X-Y plane contains the two wires and the position Z -axis comes normally out of the plane of paper. The magnetic field B at O is non-zero along

Two parallel wires carry currents of 20A and 40A in opposite directions. Another wire carrying a current antiparallel to 20A is placed midway between the two wires. The magnetic force on it will be