In a velocity selector, the uniform magnetic field of 1.2 T is produced by a lar

Question

In a velocity selector, the uniform magnetic field of 1.2 T is produced by a large magnet. Two parallel plates with a separation of 1.7 cm produce the perpendicular electric field.

In a velocity selector, the uniform magnetic field of 1.2 T is produced by a large magnet. Two parallel plates with a separation of 1.7 cm produce the perpendicular electric field. What voltage should be applied across the plates so that a singly charged ion traveling at 9.00 104 m/s will pass through undeflected? What voltage should be applied across the plates so that a doubly charged ion traveling at the same speed will pass through undeflected?

Explanation / Answer

a. induced emf e = voltage V = lvB V = 0.017* 1.2* 90000 V = 1836 volts 1.836 KV

b.V2/V1 = q2/q1 = 2

V2 =2V1 =   3672 Volts

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