Question

1)If there is a cavity inside a conductor with no charge in it, what is the...

1)If there is a cavity inside a conductor with no charge in it, what is the electric field in there? 2)What is Faraday’s ice pail experiment? 3)What is the work principle of Van de Graaff electrostatic generator? 4)What is electrostatic shielding? 5)Why lightning bolts are vertical?

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

1) Zero

No matter the conductor is charged or not. If the cavity is having no charge inside it,then the electric field inside it is also zero.

This is because as soon as the conductor is placed in an electric field, the free electrons near the surface start to pile up on a side (on the surface, depending upon the direction of external electric field) leaving the opposite side positively charged. In this way these induced charges create an electric field of their own in opposite direction to the external field. The process continues untill this electric field due to induced charges becomes equal to external electric field and they cancel out.

So the influence of any external electric field is killed by the induced charges at the very surface of conductor so that the field inside the conductor is zero.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
a)What are electric dipole and electric dipole moment? b)What is the work principle of Van de...
a)What are electric dipole and electric dipole moment? b)What is the work principle of Van de Graaff electrostatic generator?
The dome of a Van de Graaff generator receives a charge of 9.2 ✕ 10−4 C....
The dome of a Van de Graaff generator receives a charge of 9.2 ✕ 10−4 C. Find the strength of the electric field in the following situations. (Hint: Review properties of conductors in electrostatic equilibrium. Also, use the points on the surface are outside a spherically symmetric charge distribution; the total charge may be considered to be located at the center of the sphere.) (a) inside the dome N/C (b) at the surface of the dome, assuming it has a...
4.If, for a given conductor, the local surface charge density is sigma, what is the direction...
4.If, for a given conductor, the local surface charge density is sigma, what is the direction and magnitude of the electric field in that region? What’s the value of the electric field inside a conductor and why? Where is the excess stationary electric charge located for a conductor and why?
The dome of a Van de Graaff generator re- ceives a charge of 1.9 × 10−4...
The dome of a Van de Graaff generator re- ceives a charge of 1.9 × 10−4 C. The radius of the dome is 5.0 m. Find the magnitude of the elec- tric field strength inside the dome. The value of the Coulomb constant is 8.98755×10 N·m /C . Answer in units of N/C. Find the magnitude of the electric field strength at the surface of the dome. Answer in units of N/C. Find the magnitude of the electric field strength...
Today Van de Graaff accelerators sometimes serve as “injectors” for other types of accelerators that then...
Today Van de Graaff accelerators sometimes serve as “injectors” for other types of accelerators that then further increase the energy of the particles. Consider a Van de Graaff accelerator that is being used to accelerate protons. The high voltage terminal (metal sphere) of the Van de Graff is charged using a rubberized belt that is 30 cm wide and travels at a velocity of 20 m/s. Charge is sprayed onto the belt near the roller at the low voltage end...
1. An isolated spherical conductor has an excess charge of -8.6 ?C placed on its surface....
1. An isolated spherical conductor has an excess charge of -8.6 ?C placed on its surface. Inside the conductor is a cavity, within which is a point charge of 2.20 ?C. How many excess electrons are on the exterior surface of the conductor ? 2. Now, an additional 6.0 ?C is placed on the exterior of the sphere in the above problem. What will the total electric flux through a cubical gaussian surface drawn outside the sphere be?
10. A spherical conductor of radius R = 1.5cm carries the charge of 45μ, (a) What...
10. A spherical conductor of radius R = 1.5cm carries the charge of 45μ, (a) What is the charge density (ρ) of the sphere? (b) Calculate the electric field at a point r = 0.5cm from the center of the sphere. (c) What is the electric field on the surface of the sphere? 11. Two capacitors C1 and C2 are in series with a voltage V across the series combination. Show that the voltages V1 and V2 across C1 and...
1.       It is Friday night and Dr. J's classroom is full of eager young students. Yes,...
1.       It is Friday night and Dr. J's classroom is full of eager young students. Yes, it's the weekly meeting of the Wizards of Oz, a club for bright preteens interested in science. This particular night is even more special because new members will be officially received into the club. Dr. J had been attracted to the group over a year ago and, after rubbing shoulders with the youngsters, his interest was sparked. His attitude grew more positive over the...
We’ve explored the behavior of charge in the context of the Van de Graaff (VDG) generator....
We’ve explored the behavior of charge in the context of the Van de Graaff (VDG) generator. In one experiment, we tried to predict the behavior of a grounded metal wand in relation to the VDG dome. We saw the wand experience moments of attraction to the dome, interrupted by brief arcs between them. We came to some understanding of what was happening, and in the process, students asked several great questions. One question was about how the behavior of the...
1- A U-shaped conductor and conducting rod are used to form a slidewire generator. The generator...
1- A U-shaped conductor and conducting rod are used to form a slidewire generator. The generator lies in the xy plane with its conducting rod being parallel to the y axis and sliding along the positive x axis. A uniform magnetic field is applied in the positive z direction. If the velocity of the rod is doubled, what happens to the power dissipated by the generator's resistance? -It is quadrupled - It is doubled -It stays the same -It is...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT