The two metal objects in the figure have net chargesof +74 pC and -74 pC, which result in a 23 Vpotential difference between them. (a) What is thecapacitance of the system? (b) If the charges arechanged to +210 pC and -210 pC, what does thecapacitance become? (c) What does the potentialdifference become?(a) Numberi(b) Number i(c) NumberiUnitsUnitsUnits<>

Answered: The two metal objects in the figure…

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter8: Capacitance

Section: Chapter Questions

Problem 8.6CYU: Check Your Understanding The potential difference across a 5.0-pF capacitor is 0.40 V. (a) What is...

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The two metal objects in the figure have net charges
of +74 pC and -74 pC, which result in a 23 V
potential difference between them. (a) What is the
capacitance of the system? (b) If the charges are
changed to +210 pC and -210 pC, what does the
capacitance become? (c) What does the potential
difference become?
(a) Number
i
(b) Number i
(c) Number
i
Units
Units
Units
<>

Expert Solution

Step 1: Charge and capacitance

Write the expression for the charge and substitute the corresponding values to calculate the capacitance of the system.

$table row cell Q equals C V end cell row cell 74 text pC end text equals C left parenthesis 23 text V end text right parenthesis end cell row cell C equals 3.217 text pF end text end cell end table$

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