A very long straight current carrying conductor is carrying current of 2 A from west to east in a horizontal plane. Suddenly, a magnetic field of `4 xx 10^(-5)` T is switched on in vertically downward direction. Find the magnitude and direction of force per unit length of the conductor. How will the force unit length changes if the current in the wire is reversed ?

Explanation

To solve the problem, we will use the formula for the magnetic force acting on a current-carrying conductor in a magnetic field. The formula is given by:

\[ F = I \cdot L \cdot B \cdot \sin(\theta) \]

Where:
- \( F \) is the force,
- \( I \) is the current (in Amperes),
- \( L \) is the length of the conductor (in meters),
...