1) Part A: Given a current of 1.2[A]; a coil radius of 0.17[m]; and N=130, what

Question

1)

Part A: Given a current of 1.2[A]; a coil radius of 0.17[m]; and N=130, what is the strength of the magentic field in milliTeslas? (use 3 sig figs in answer, and please show work)

Part B: Lets say you are given a magnetic field B=0.000825[Teslas]. you also have an average V/d^2=14803[V/m^2]; what is the value for e/m? (units are suppressed
(Report your answer with three sig. figs. and use scientific notation "E". ie. 1.98E11)

Part C: what is the accepted value for e/m? Use Scientific Notation (i.e. 1.76E11)

Explanation / Answer

A) B = u0 *I *N   / 2R

B = 4pi x 10^-7 x 1.2 x 130 / 2 x 0.17 = 0.578 x 10^-3 T or 0.578 mT

B)

V / (d^2)= 14803[V/m2]

considering thet 'd' is the diameter

V/(r^2)=59212 [V/m2]

magnetic field (B)=0.000825 T

(e/m)= 59212/(0.000825^2)

=8.7 X (10^10)

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