Question

A proton traveling to the right enters a region of uniform magnetic field that points into the screen.

When the proton enters this region, it will be?

a)deflected toward bottom of the screen

b)deflected out of the plane of screen

c)deflected toward top of the screen

d)deflected into plane of screen

e)unaffected in its direction of motion

Answer 1

When the proton enters this region, it will be deflected toward top of the screen.

Step-by-step explanation:

When a proton enters in magnetic field, it will experience a force. It is called magnetic force. It is given by :

`F=q(v* B)`

q is the charge on proton

v is the speed of proton

B is the magnetic field

It is mentioned that a proton traveling to the right enters a region of uniform magnetic field that points into the screen such that,

q = +e

v = vi

B = -Bk ( into the screen)

`F=+e(v\ i* (-B\ k))`

Using right hand rule,

Since,
`k* i=-j`

`F=(evB)\ j`

So, when the proton enters this region, it will be deflected toward top of the screen. Hence, this is the required solution.