Avelocity selector can be used to measure the speed of a charged particle. a beam of particles is directed along the axis of the instrument. the plates are separated by 3 mm and the magnitude of the magnetic field is 0.3 t. what voltage between the plates will allow particles of speed 5.0 x 10^5 m/sa. 1200 v b. 3800 v c. 7500 v d. 190 v e. 380 v

Voltage, V = 450 volts

Explanation:

It is given that,

Separation between plates, d = 3 mm = 0.003 m        

magnitude of magnetic field, B = 0.3 T

Speed of the particle,

The relation between the magnetic field, electric field and the velocity of the particle is given by :

Also,

V = 450 volts

So, the voltage between the plates will be 450 V. Hence, this is the required solution.