Question

qual charges, one at rest, the other having a velocity of 104 m/s, are released in a uniform magnetic field. Which charge has the largest force exerted on it by the magnetic field?

Answer 1

Answer:

The correct option is D

Explanation:

From the question we are told that

    The speed of the first charge is  $v = 0 \ m/s$

This is because it is at rest

     The speed of the second charge is  $v = 10^{4} \ m/s$

Generally the force exerted by a magnetic field on a charge is mathematically represented as

      $F_q = q * v * B sin \theta$

Now looking at this above equation we can see that $F_q$ can only be maximum at  $\theta = 90 ^o$ and this only obtained when the direction of the charge (i.e its velocity  ) is perpendicular to the direction of the magnetic field

so the correct option for this question is D