Problems - Be sure to show all work. Round all calculated values to no more than 3 decimal places. Use metric prefixes when possible.
1. The numbers of orbiting electrons in Al and Ag are 13 and 47 respectfully. Draw the atomic configuration for each and briefly discuss why each is a good conductor.
2. Although Au is not the most conductive metal relative to Ag or Cu it has other highly desirable properties. Cost aside, briefly discuss some of the advantages of using gold in electronic systems.
3. Briefly discuss and compare the differences between conductors, semiconductors and insulators.
4. Find the voltage between two points if 60J of energy are required to move a charge of 20C between two points.
5. Determine the energy expended moving a charge of 50μC between two points if the voltage between the points is 6V.
6. If a current of 40mA exists for 0.8 minutes how many coulombs have passed through the wire?
7. Will a fuse rated at 1A "blow" is 86C pass through it in 1.2 minutes? Briefly describe the purpose of a fuse?
8. The charge flowing through a conductor is 0.16C every 64ms. Determine the current in amperes.
9. Determine how long it will take 4 x 1016electrons to pass through an imaginary surface if the current is 5mA.
10. How long will a 9V battery with an ampere rating of 250mAH provide a current of 20mA?
11. What is the Ah rating of a battery that can provide 0.8A for 75h?