# hw #9 - ENGR 210 Homework#9 Fall 2008 Due Mutual Inductance...

This preview shows pages 1–5. Sign up to view the full content.

ENGR 210 Fall 2008 Homework #9 Due October 29, 2008 Mutual Inductance Problem 1 There is no energy stored in the circuit shown below at the time the switch is opened. (a) Derive the differential equation which describes the behavior of i 2 if L 1 =10H, L 2 =40H, M=5H and R o =90 Ω . (b) Show that if i g = 10 e t 10 amperes, t 0, the differential equation in (a) is satisfied by i 2 = e t 5 e 2.25 t amperes, t 0. (c) What is the expression for the voltage v 1 across the current source? (d) What is the initial value of v 1 ? (e) What is the coefficient of coupling k? (f) For these two coils, what is the largest value that M can have?

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Problem 2 Switched Inductor The switch in the circuit shown below has been open for a long time. At t=0 the switch is closed. (a) Determine i o (0 + ) and i o ( ). (b) Determine i o (t) for t 0 + ? (c) How many milliseconds after the switch has been closed will the current in the switch equal 3.8A.
Problem 3

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 5

hw #9 - ENGR 210 Homework#9 Fall 2008 Due Mutual Inductance...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online