Two long wires each carrying a d.c. current in the same direction are placed close to each other. Which one of the following statements is correct?

Two parallel wires carrying current in the same direction attract each other while two beams of electrons travelling in the same direction repel each other. Why?

Two infinitely long wires each carrying current I along the same direction are made into the geometry as shown in the figure. The magnetic field at the point P is

Two parallel conductors carrying current in the same direction attract each other, while two parallel beams of electrons moving in the same direction repel each other. Which of the following statement provide part of all of the reason for this ? (Choose the incorrect option)

Two heating coils, one of fine wire and the other of thick wire of the same material and of the same length are connected in series and in parallel. Which of the following statement is correct ?

Three coplanar parallel wires, each carrying a current of 10 A along the same direction, are placed with a separation 5.0 cm between the consecutive ones. Find the magnitude of the magnetic force per unit length acting on the wires.

Two long thein, parallel conductors carrying equal current in the same direction are fixed parallel to the x-axis one passing throught magnetic field due to the two conductors at any point is B Which of the following are correct ?

Two long, straight parallel conductors each carrying 2A current in the same direction are 10 cm apart. Calculate the magnetic field at a distance a) at a point which is midway between the wires b) at a point which is 15 cm from one wire and 5cm from the other.

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 linear parallel conductors carrying currents in the opposite direction…………………each other.