Serway_PSE_quick_ch26

# Serway_PSE_quick_ch26 - Physics for Scientists and...

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

Physics for Scientists and Engineers, 6e Chapter 26 - Capacitance and Dielectrics

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

View Full Document
A capacitor stores charge Q at a potential difference Δ V . If the voltage applied by a battery to the capacitor is doubled to 2Δ V : 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 1. the capacitance falls to half its initial value and the charge remains the same 2. the capacitance and the charge both fall to half their initial values 3. the capacitance and the charge both double 4. the capacitance remains the same and the charge doubles
The capacitance is a property of the physical system and does not vary with applied voltage. According to Equation 26.1, if the voltage is doubled, the charge is doubled.

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

View Full Document
capacitors, as shown in the figure below. When a key is pushed down, the soft insulator between the movable plate and the fixed plate is compressed. When the key is pressed, the capacitance 1 2 3 33% 33% 33% 1 2 3 4 5 1. increases 2. decreases 3.
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 11/01/2009 for the course PHY phy2049 taught by Professor Wilfredngwa during the Fall '09 term at University of Central Florida.

### Page1 / 13

Serway_PSE_quick_ch26 - Physics for Scientists and...

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

View Full Document
Ask a homework question - tutors are online