Please answer these questions. Thank you! 3. The following questions involve two
ID: 2003803 • Letter: P
Question
Please answer these questions. Thank you!
3. The following questions involve two neutral spheres. One sphere is perfect conductor and the a other is a perfect insulator, but the spheres are otherwise identical a. The insulating sphere is placed in a uniform external field Eo Do charges in the sphere move? If so, describe how, and if not, explain why not. ii. What is the magnitude and direction of the net electric field at point A? b. The insulating sphere is replaced with a conducting sphere as shown, in the same external field Eo i sketch the stable charge distribution that appears on the sphere ii. What is the magnitude and direction of the induced electric field at point A? iii. What is the magnitude and direction of the net electric field at point A? c. The charge distribution that you drew on the conducting sphere above is placed on the insulating sphere, which is put in the same external field as before i. What is the magnitude and direction of the net electric field at point A? Explain The direction of the external field is reversed so that it points to the left. ii. What is the magnitude and direction of the net electric field at point A? ExplainExplanation / Answer
3) a) An insulator means which doesnot contains free electrons
They do not conduct electricity.
On the application of electric field the electrons may be able to move to and fro about their equilibrium positions but they do not leave the vicinity of their atoms.
b) A conductor means which have free electrons
They conduct electricity.
When a spherical conducting sphere is placed in uniform electric field , the positive and negetive charges will move toward the polar regions of sphere. Due to this induced charges there will be an induced electric field exist.
Inside the conductor induced field is opposite to the external field .
At electrostatic equilibrium E=0 at A
But outside conductor E=Eo+Ei