E M Experiment. Experiment11 Determination of e/m for the Electron (a) The potential energy of the electrons (eVA) can be equated to their kinetic energy (1 2 mv2) ie 1 2 mv2 = eV A (118) e/m can now be determined by substitution in Eq 117 (see Eq 1112) (b) Thompson showed that if an electric field of strength E is applied at the same time as and File Size 195KBPage Count 7.
Physics 2225 Em Experiment Purpose Determine The Charge from SlideToDoc.com
e/m = [ ( 125 a 2 / 128 π 2 N 2 ) x 10 14 ] ( V / I 2 D 2 ) Where V Accelerating Potential a Radius Of The Helmholtz Coils N Number Of Turns On Each Helmholtz Coil I Current Through The Helmholtz Coils D Diameter Of The Electron Beam Path.
e/m Experiment Apparatus (Thomson’s method)
The e/m Ratio¶ Background¶ This classic experiment was first carried out by JJThomson in 1897 It involves the use of an electric field to accelerate electrons up to high velocity and a magnetic field to then steer the electrons in a circular trajectory.
EXPERIMENT 11 Determination of e/m for the Electron
PHYS 1493/1494/2699 Exp 4 – e/m of the electron 2 Introduction Our first measurement of atomic structure Chargetomass ratio of electron Motivation and history of the first e/m measurement Consequences Thomson’s experiment The physics behind the experiment The magnetic field generated by a single loop File Size 1MBPage Count 37.
Physics 2225 Em Experiment Purpose Determine The Charge
The e/m Ratio — Modern Lab Experiments documentation
Experiment 4: Charge to mass ratio (e/m) of the electron
E/M Experiment: Electrons in a Magnetic Field.
E/M Experiment Electrons in a Magnetic Field PRELAB You will be doing this experiment before we cover the relevant material in class But there are only two fundamental concepts that you need to understand First moving charges which could be due to a current in a wire create magnetic fields For a current I going around a circular loop.
