How to charge a conductor permanently by induction?
Dear Student,
The induction charging is a charging method that charges an object without actually touching the object to any another charged object. The charging by induction process is where the charged particle is held near an uncharged conductive material that is grounded on a neutrally charged material. The charge flows between two objects and the uncharged conductive material develop a charge with opposite polarity.
It can be permanently charged by earthing the conductor on which charge is induced.
Considering an example of charging a spherer by a charged object.
In the induction process, a charged object is brought near but not touched to a neutral conducting object. The presence of a charged object near a neutral conductor will force (or induce) electrons within the conductor to move. The movement of electrons leaves an imbalance of charge on opposite sides of the neutral conductor. While the overall object is neutral (i.e., has the same number of electrons as protons), there is an excess of positive charge on one side of the object and an excess of negative charge on the opposite side of the object. Once the charge has been separated within the object, a ground is brought near and touched to one of the sides. The touching of the ground to the object permits a flow of electrons between the object and the ground. The flow of electrons results in a permanent charge being left upon the object. When an object is charged by induction, the charge received by the object is opposite the charge of the object which was used to charge it. During the induction process, there is never any movement of electrons from the charged object to the sphere. The charged object is only used to induce electron movement. Electrons, being negatively charged, move about the conducting sphere as they are repelled by the negatively charged tube. Once the ground is touched to the sphere, the electrons can even move further from the negatively charged tube by leaving the sphere and moving through the ground. It is at this point that the sphere acquires an unbalance of charge. Since there was a loss of negative charge in the form of electrons, the overall charge on the sphere is positive.
Regards
The induction charging is a charging method that charges an object without actually touching the object to any another charged object. The charging by induction process is where the charged particle is held near an uncharged conductive material that is grounded on a neutrally charged material. The charge flows between two objects and the uncharged conductive material develop a charge with opposite polarity.
It can be permanently charged by earthing the conductor on which charge is induced.
Considering an example of charging a spherer by a charged object.
In the induction process, a charged object is brought near but not touched to a neutral conducting object. The presence of a charged object near a neutral conductor will force (or induce) electrons within the conductor to move. The movement of electrons leaves an imbalance of charge on opposite sides of the neutral conductor. While the overall object is neutral (i.e., has the same number of electrons as protons), there is an excess of positive charge on one side of the object and an excess of negative charge on the opposite side of the object. Once the charge has been separated within the object, a ground is brought near and touched to one of the sides. The touching of the ground to the object permits a flow of electrons between the object and the ground. The flow of electrons results in a permanent charge being left upon the object. When an object is charged by induction, the charge received by the object is opposite the charge of the object which was used to charge it. During the induction process, there is never any movement of electrons from the charged object to the sphere. The charged object is only used to induce electron movement. Electrons, being negatively charged, move about the conducting sphere as they are repelled by the negatively charged tube. Once the ground is touched to the sphere, the electrons can even move further from the negatively charged tube by leaving the sphere and moving through the ground. It is at this point that the sphere acquires an unbalance of charge. Since there was a loss of negative charge in the form of electrons, the overall charge on the sphere is positive.
Regards