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Chapter 23: Problem 7

A capacitor is said to carry a charge \(Q .\) What's the net charge on the entire capacitor?

Short Answer

Expert verified
The net charge on the entire capacitor is 0.

Step by step solution

01

Understanding the Principle of Capacitance

A capacitor is a device that stores electric charge. It's made up of two plates with opposite charges - one plate carries a positive charge, and the other carries an equivalent negative charge.
02

Applying the Principle

Given in the problem that a capacitor carries a charge \(Q\). This means one plate has a charge of \(+Q\) and the other has a charge of \(-Q\). Let's add these two charges.
03

Calculating Net Charge

The net charge of a capacitor is calculated by adding up the charges on both plates. So the net charge \(Q_{net} = +Q + (-Q) = 0\).

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Most popular questions from this chapter

Consider a proton to be a uniformly charged sphere 1 fm in radius. Find the electric energy density at the proton's surface.

You're given three capacitors: \(1.0 \mu \mathrm{F}, 2.0 \mu \mathrm{F},\) and \(3.0 \mu \mathrm{F} .\) Find (a) the maximum, (b) the minimum, and (c) two intermediate capacitances you could achieve using combinations of all three capacitors.

Your company is still stuck with those 2 - \(\mu\) F capacitors from Problem 50. They turn out to be so cheap that their capacitances are all too low, ranging from \(1.7 \mu \mathrm{F}\) to \(1.9 \mu \mathrm{F}\). A colleague suggests you put variable "trimmer" capacitors in parallel with the cheap capacitors and adjust the combination to precisely \(2.00 \mu \mathrm{F} .\) The available trimmers have variable capacitance from \(25 \mathrm{nF}\) to \(350 \mathrm{nF}\). Will they work?

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