Calculate the force per unit length between two parallel long straight wires 2 cm apart in air, each carrying a current of 4 ampere.

Calculate the force per unit length on a long straight wire caerrying current of 4 A due to a parallel wire carrying 6 A current. Distance between the wires = 3 cm.

A rectangular loop of sides 25 cm and 10 cm carrying current of 15A is placed with its longer side parallel to a long straight conductor 2.0 cm apart carrying a current of 25A. What is the new force on the loop ?

Find the magnitude and direction of the force between two parallel conducting wires carrying current and hence define ampere.

The wires which connect the battery of an automobile to its starting motor carry a current of 300 A (for a short time). What is the force per unit length between the wires if they are 70 cm long and 1.5 cm apart? Is the force attractive or repulsive?

Write expression for the force between two short parallel wires carrying a current, when they are much separate?

WHat is the direction of force between two parallel conductors carrying current in same direction

A current of 10 A flows through each of two parallel long wires. The wires are 5 cm apart. Calculate the force acting per unit length of each wire. Use the standard value of constant required.