Lecture%2027%202220%20Spring%2020090

Lecture%2027%202220%20Spring%2020090 - Reminders and...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Reminders and Announcements • HW 16 is due Friday; HW 17 is due next Tuesday. • No quiz this week but some of recitation No quiz this week, but some of recitation time will be used for course evaluation. • We will be grading the exams early next week. • Help Room Hours (Physics 117): – M 4-8 pm, T 3-6:30, W 3-6:30, R 4:30-8, F 2-6 LC Circuits • A capacitor is connected to an inductor in an LC circuit • Assume the capacitor is Assume the capacitor is initially charged and then the switch is closed • Assume no resistance and no energy losses to radiation Oscillations in an LC Circuit • Under the previous conditions, the current in the circuit and the charge on the capacitor oscillate between maximum positive and negative values • With zero resistance, no energy is transformed into internal energy • Ideally, the oscillations in the circuit persist indefinitely – The idealizations are no resistance and no radiation Oscillations in an LC Circuit, • The total energy stored in the LC circuit remains constant in time and equals 2 2 1 22 I CL Q UU U L C =+= + LC Circuit Analogy to Spring- Mass System Charge and Current in an LC Circuit
Background image of page 1

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

View Full DocumentRight Arrow Icon
2 Energy in an LC Circuit – Graphs • The energy continually oscillates between the energy stored in the electric and magnetic fields • When the total energy is stored in one field,
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This document was uploaded on 09/30/2009.

Page1 / 5

Lecture%2027%202220%20Spring%2020090 - Reminders and...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online