Author Question: In a mass spectrometer, a single-charged particle (charge e) has a speed of 1.0 106 m/s and enters ... (Read 75 times)

kfurse · **on:** Jul 29, 2018

In a mass spectrometer, a single-charged particle (charge e) has a speed of 1.0 106 m/s and enters a uniform magnetic field of 0.20 T. The radius of the circular orbit is 0.020 m. What is the mass of the particle?

A)

3.2 10-28 kg
B)

6.4 10-28 kg
C)

1.7 10-27 kg
D)

4.5 10-27 kg
E)

3.1 10-31 kg

Question 2

In a Hall experiment a conducting strip of thickness d = 100 m is placed in a magnetic field B = 0.0 5 T. The magnetic field is perpendicular to the direction of the strip along which there is a 10-A current.

What is the Hall voltage measured across the strip if the charge carrier density is 2.5 1028/m3 in this material? A)

1.3 V
B)

2.5 V
C)

0.72 V
D)

6.2 V
E)

4.2 V