Question

A. After placing a CRT into the center of a solenoid, you wohld start increasing the current steadily until you find the current value that we must use in calculating the charge-to-mass ratio of the electron. How can you tell the value shown on the power supply is the right one to use?

B. Is it more or less accurate to measure the magnetic field inside the solenoid just once with the gaussmeter instead of measuring the field along the length of the solenoid and averaging the field? Explain.

C. A CRT is used with a magnetic field by a solenoid coil to determine charge to mass ratio of electrons, which were deflected in a magnetic field. The CRT was placed inside the coil and the CRT was placed into the solenoid. What are 3 systematic errors that can influence data?

Answer 1

by 4) we can find the magnetic field of the solenoid Ampere's Law B.228 = MONI = B = MONI 258 & charge moves in CRT by centrifugar force provided by magnetic freed mve MONI 207 xq xx 2 av nowl when we know theit I = 21 mv that is the right current. Mona B It is more accurate to measure the held by ganmeter alone the length of the solenoid & averaging it it. Because magnita field fluctuates within the solenoid can (because it is not the ideal one.). The assumption that the beam passes through the ongin of the greaticuse in pasellel to the grating lines is generally not true. This leads to systematit essos. 1) essor for direction of magnetic field. 2) essor for bending of helds. 3) Random ensoss in reading coordinates.