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

The correct option is D

Step-by-step 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