Question

The Millikan Oil Drop Experiment Quiz     

1. In your own words, describe the goal of the Millikan Oil Drop Experiment.

2. Why did Millikan and Fletcher use an atomizer to get the oil into the apparatus?

3. How was each drop given an electric charge?

4. How was Millikan able to determine the force of the uniform electric field on each drop?

5. Millikan was able to determine the overall charge on each drop by using the formula . How was he able to determine how many electrons that charge represented?

6. How closely were Millikan and Fletcher able to calculate the charge of a single electron, based on the value we use today?

7. Suppose the experiment were being recreated, and a particular drop was noted to carry a charge of 8.0 x 10^-19C, with how many extra electrons would you predict it had been charged?

8. A particular oil drop is suspended in a field with an intensity of 2.19 x 10³N/C. If the drop weighs 1.4 x 10^-15N, what is the charge on the drop?

9. How many extra electrons would you predict are carried by the drop from question #8?

Answer 1

Post one more question to get the remaining answers

1) The major goal or objective of the Millikan oil drop experiment is to calculate the size ot the charge on an electron.

2) Atomizer used by Millikan and Fletcher helps in spraying a fine and equal quantity of oil droplets in the chamber

3) In order to induced the charge on the oil droplets, millikan used x-rays to illuminate the bottom chamber of the container which induced the charge in the oil particles

4) When the particle was suspended in the air, the both the gravitational force and charge force must be balancing each other

qE = mg

charge q = mg/E