1. Calculate the theoretical value of e/m using the known values of the electric charge and electron mass. 2. A student performs this lab using a pair of coils with radius R = 10 cm and N = 98 windings. Using the equation in the theory, calculate the magnetic field at the center of both coils when the coil current is 4.3 A. 3. Using the same coil current as question 2, the student measures a beam radius of 7.5 mm when the accelerating voltage is 70 V. Using equation 5 in the theory (and your B-field from question 2) calculate the value of e/m. 4. Calculate the percent error between your result for question 3 and the theoretical value of e/m.
1. Calculate the theoretical value of e/m using the known values of the electric charge and electron mass. 2. A student performs this lab using a pair of coils with radius R = 10 cm and N = 98 windings. Using the equation in the theory, calculate the magnetic field at the center of both coils when the coil current is 4.3 A. 3. Using the same coil current as question 2, the student measures a beam radius of 7.5 mm when the accelerating voltage is 70 V. Using equation 5 in the theory (and your B-field from question 2) calculate the value of e/m. 4. Calculate the percent error between your result for question 3 and the theoretical value of e/m.
Chapter11: Magnetic Forces And Fields
Section: Chapter Questions
Problem 55P: The magnetic field in a cyclotron is 1.25 T, and the maximum orbital radius of the circulating...
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Question
1. Calculate the theoretical value of e/m using the known values of the electric charge and
electron mass.
2. A student performs this lab using a pair of coils with radius R = 10 cm and N = 98 windings.
Using the equation in the theory, calculate the magnetic field at the center of both coils when the
coil current is 4.3 A.
3. Using the same coil current as question 2, the student measures a beam radius of 7.5 mm
when the accelerating voltage is 70 V. Using equation 5 in the theory (and your B-field from
question 2) calculate the value of e/m.
4. Calculate the percent error between your result for question 3 and the theoretical value of e/m.
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