Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 4: Q11DQ (page 808)

As shown in Table 24.1, water has a very large dielectric Constant K = 80.4. Why do you think water is not commonly used as a dielectric in capacitors?

Short Answer

Expert verified

Water is a very poor conductor it is an excellent solvent for ions which cause the charges flow between the plates

Step by step solution

01

About Dielectric Capacitors

The polarization of the dielectric by the applied electric field increases the capacitor’s surface charge for the given electric field strength.

02

Determine Water is not commonly used as dielectric capacitor

The pure water is a very poor conductor but at the same time water is an excellent solvent for ions. These ions dissolved in the water cause the charges to flow between the two conducting plates and make a short circuit between the two plates, hence the capacitor discharges.

Therefore Water is a very poor conductor. It is an excellent solvent for ions which cause the charges to flow between the plates.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

An electron moves at 1.40×106m/sthrough a regionin which there is a magnetic field of unspecified direction and magnitude 7.40×10-2T. (a) What are the largest and smallest possible magnitudes of the acceleration of the electron due to the magnetic field? (b) If the actual acceleration of the electron is one-fourth of the largest magnitude in part (a), what is the angle
between the electron velocity and the magnetic field?

When is a 1.5 - VAAA battery not actually a 1.5 - V battery? That is, when do this its terminals provide a potential difference of less than 1.5 V ?

An electrical conductor designed to carry large currents has a circular cross section 2.50 mm in diameter and is 14.0 m long. The resistance between its ends is 0.104Ω. (a) What is the resistivity of the material? (b) If the electric-field magnitude in the conductor is 1.28 V/m, what is the total current? (c) If the material has 8.5×1028free electrons per cubic meter, find the average drift speed under the conditions of part (b).

Two coils have mutual inductance M=3.25×10-4H. The current in the first coil increases at a uniform rate of 830 A/S. (a) what is the magnitude of the induced emf in the second coil? Is it constant? (b) Suppose that the current described is in the second coil rather than the first. What is the magnitude of the induced emf in the first coil?

Can potential difference between the terminals of a battery ever be opposite in direction to the emf? If it can, give an example. If it cannot, explain why not.
See all solutions

Recommended explanations on Physics Textbooks

Wave Optics

Read Explanation

Medical Physics

Read Explanation

Fundamentals of Physics

Read Explanation

Physical Quantities And Units

Read Explanation

Radiation

Read Explanation

Rotational Dynamics

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free