127-03 Capacitor

127-03 Capacitor - PHYSICS 127 EXPERIMENT NO 3 CAPACITORS...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
PHYSICS 127 EXPERIMENT NO. 3 CAPACITORS In this experiment we will determine the capacitance of an unknown capacitor by observing the change in potential difference between its plates when, after being initially charged, it is connected in parallel with a known capacitor. We will also study the behavior of capacitors connected in series. A. Equipment 1 Oscilloscope, 1 Unknown Capacitor, 1 Decade Capacitance Box with 1 μ F Steps, 1 Double-pole Double-throw Switch, 1 Dry Cell. B. Method In Part I, a capacitor C 1 is charged to potential V 0 by connecting it across a dry cell. The cell is disconnected and then an initially uncharged capacitor C 2 is connected in parallel with C 1 . Charge will flow from C 1 to C 2 until the potentials across the capacitors equalize. The voltage across the parallel combination is given by: V = C 1 C 1 + C 2 V 0 (1) Q1. Derive equation (1). Rearranging equation (1) gives: V 0 V = C 2 C 1 + 1 (2) C 2 is an adjustable capacitor. As C 2 is changed, the final voltage V will
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/27/2009 for the course PHY 126 taught by Professor Staff during the Spring '08 term at SUNY Stony Brook.

Page1 / 3

127-03 Capacitor - PHYSICS 127 EXPERIMENT NO 3 CAPACITORS...

This preview shows document pages 1 - 2. Sign up to view the full document.

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