Question

The largest force experienced by a current carrying conductor placed in a magnetic field is when the angle between the conductor and the magnetic field is:

• A. ${30}^0$
• B. ${45}^0$
• C. ${90}^0$
• D. ${60}^0$

Answer 1

The correct option is C ${90}^0$

The force experienced by a current carrying conductor is given by the lorentz force. $F=q.E+q(v\times B)$
When electric field is '0', then the force is given by $\Rightarrow F=q(v\times B)$
This force in terms of its magnitude is $F=qvBsin\theta$
$Sin\theta$ is maximum at $\theta ={90}^0$.
Hence, option C is the correct answer