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What is Physics Good For?

Warming up on... Inductance

This assignment is due before 9 AM, Friday, October 12^th, 2007.

Please type your last name and first initial (e.g., Rader, A):

Please type a nickname: (in case your answer gets used in class).

The following questions refer to the material you were to read in preparation to the lesson. Please write a three or four sentence response to each of the questions.

You may change your mind as often as you wish. When you are satisfied with your responses, click the SUBMIT HOMEWORK button at the bottom of this page.

WarmUp questions are worth 4 points each towards your "WarmUps" score (100 points total).

1.

In your own words, explain why an L-C circuit is fundamentally different from a R-C or R-L circuit.

2.

A radio has RLC circuits inside that resonate at the same frequencies as the radio waves they receive (88.1-107.9 MHz for FM, 540-1180 KHz for AM). Suggest a pair of values for L and C that could be used to make a circuit in each of these ranges.

3.

Consider an L-R-C series circuit. Which of the following options describes the situation of a critically damped circuit.

R² = 4L/C.

R² > 4L/C.

R² < 4L/C.

R = 0.

L = C = R.

Below is a space for your thoughts, including general comments about today's assignment. What was hard or confusing (or cool)? What would you like to spend extra time on in class? Do you see how this subject fits in with the others we have discussed?

You may change your mind as often as you wish. When you are satisfied with your responses click the SUBMIT button.

This site is made possible by funding from the National Science Foundation (DUE-9981111).

This assignment is due before 9 AM, Friday, October 12th, 2007.

1.

2.

3.

This assignment is due before 9 AM, Friday, October 12^th, 2007.