How electric forces and electric fields interact in pieces of paper attracted by comb?
How electric forces and electric fields interact in pieces of paper attracted by comb?
A comb is charged with static electricity by combing hair. In turn, the charged comb attracts pieces of paper. Thus, the attractive force on the paper molecules’ nuclei (which are closer) is stronger than the repulsive force on the paper molecule’s electrons (which are farther).
Why does static electricity attract paper?
The fibers have lost electrons giving them a positive charge. The rubber gained electrons giving it a negative charge. The positively charged fibers are now attracted to the negatively charged balloon. The negatively charged balloon attracts the paper.
Why does a plastic comb attract paper?
Initially, the comb is electrically neutral. So it has no effect on the tiny pieces of paper. When the comb is rubbed on a dry cloth, it gets electrically charged. This charged comb exerts an electric force on the tiny pieces of paper and attracts them.
How does a comb attract paper?
You can observe static electricity if you run a plastic comb through your hair, then place the comb near small pieces of paper. The paper is attracted to the comb. This happens because the charged comb induces an opposite charge in the paper and as opposite charges attract, the paper sticks to the comb.
What causes electrostatic force?
We know that positive and negative charges interact with each other. But the strength of this interaction is measured by the size of the electrostatic force. This force is caused by both the size of the electric charges and the distance between the charges.
How does the electrostatic attraction force formed?
—interactions between electrically charged particles such as protons and electrons. Electrostatic attraction. between oppositely charged species (positive and negative) results in a force that causes them to move toward each other, like the attraction between opposite poles of two magnets.
Why does it attract pieces of paper after swirling a comb through dry hair?
When a comb rubhed with dry hair attracts pieces of paper. This is because the comb induces a net dipole moment opposite to the direction of field. This happens the field due to charge on comb induces dipole moment in paper by tretching or re-orienting molecules of the dielectric.