Question

the conducting wire of length l is placed in uniform magnetic field B tesla along the direction of the field with i amount of current flowing across it then magnetic force acting on conductor is​

Answer 1

Given:

• Length of wire = l
• Magnetic field intensity = B
• Current = i

To find:

• Force experienced by the wire ?

Calculation:

First of all, the question clearly mentioned that the conducting wire is placed along the direction of the magnetic field intensity.

This means that the angle between length vector and field intensity factor will be zero degree (0°).

Now, the force is calculated as :

$F = i \times l \times B \times \sin( \theta)$

• Here $\theta$ = 0°.

$\implies F = i \times l \times B \times \sin( {0}^{ \circ} )$

$\implies F = i \times l \times B \times 0$

$\implies F = 0 \: N$

So, the force experienced by wire is 0 N.