Which of the following is the correct expression for force due to a magnetic field $(\vec{B})$ on a straight conductor of length $(l)$ carrying current I?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → $\vec{F}=I(\vec{l} \times \vec{B})$
force due to magnetic field on a current carrying conductor -
$\vec F=I(\vec l×\vec B)$
This is derived from Lorentz force.