• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month
Page
1. 1
1
2. 2
2

# To determine e/m of an electron experimentally

Extracts from this document...

Introduction

THIS DOCUMENT WAS DOWNLOADED FROM COURSEWORK.INFO - THE UK'S COURSEWORK DATABASE - HTTP://WWW.COURSEWORK.INFO/

 Tare-sang Nam Physics 102                        11/26/02

Physics Lab

Determination of e/m of an Electron

## 1. Purpose

To determine e/m of an electron experimentally

## 2. Procedure

Prepare an electron-accelerator. Place it between Helmholts Coils, which produces a uniform magnetic field. The electron-accelerator creates a potential difference, v, which speeds up a negatively charged electron to .

Middle

182

0.057

0.0032

150

0.053

0.0028

129

0.060

0.0036

170

## 4. Mathematical Formulas and Equations

where v = the voltage that accelerates electrons                                                                                      a = the radius of the coils

N = the number of turns on each coil

μ = 4π*10-7

I = the current through the coils

Conclusion

THIS DOCUMENT WAS DOWNLOADED FROM COURSEWORK.INFO - THE UK'S COURSEWORK DATABASE - HTTP://WWW.COURSEWORK.INFO/

This student written piece of work is one of many that can be found in our AS and A Level Fields & Forces section.

## Found what you're looking for?

• Start learning 29% faster today
• 150,000+ documents available
• Just £6.99 a month

Not the one? Search for your essay title...
• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month

# Related AS and A Level Fields & Forces essays

1. ## Experiment to determine gravity from a spring using analogue techniques

the trendline to draw a parallelogram around it, the LINEST function of excel must be used to calculate the uncertainty in the gradient of the trendline in the mass against extension graph. Using LINEST, the value for the gradient is:.

2. ## Investigating a factor affecting the voltage output of a transformer.

magnetic field lines would not be cut by the maximum number of secondary coils turns. However I would like to carry out work varying the distances and overlaps between the coils to find out if this statement is correct. I have described the reasons why I don't believe my results are accurate in the Analysis section.

1. ## Investigation to determine the viscosity of glycerol.

The number of molecules that have contact between the liquid layer and air is the least. Hydrogen Bonding "Unusually strong dipole-dipole attractions that occur among molecules in which hydrogen is bonded to a highly electronegative atom."3 Hydrogen bonding is a much stronger variant of Van Der Waals Forces.

2. ## To see how the number of coils on an electromagnet affect its strength.

that, the more turns on the coil is proportional to the number of paper clips that be supported and picked up. My graph proves just that because it has a strong positive correlation. The number of paper clips increases in comparison to the number of coils that increase.

1. ## Charge To Mass Ratio For An Electron

The charge-to-mass ratio of the electron involves two numbers which are independently regarded as fundamental constants of physics. Yet this ratio itself can be said to be a fundamental constant in its own right because first, its determination actually led to the discovery of the electron by Thomson , and

2. ## Modeling a basketball shoot in the lab

same time fix a ruler next to it, then Measure the original length of the spring. Method: place 50g of mass on the spring increasingly. Record the corresponding length of the spring and calculate the compression of the spring every 50g.

1. ## A Personal Experience.

With it came a sense of utter weakness, a feeling of being shrivelled to nothing. I let out a stifled cry. I disregarded it at first, a faint cry, no louder the moan of a small animal caught in a snare.

2. ## Maths Coursework &amp;amp;#150; Artic Research

Total time is 2T = 2 ? 0.258 = 0.516 = 31 minutes 36 seconds. The next observation site will be east of the base camp, at 90?. Base camp Observation site Resultant velocity Aircraft speed 200 kmh-1 Wind speed 50 km h-1 Speed of aircraft = 200 kmh-1 +

• Over 160,000 pieces
of student written work
• Annotated by
experienced teachers
• Ideas and feedback to