HOW DOES A CAPACITOR WORK CLASS 12?
Capacitor is a two terminal electronic passive component(does not create energy) which stores electric energy when voltage is applied across its plates.
Electrons from the negative side of the battery will stream to the right plate and give its negative charges.The negative charges building up on right plate will repulse(repel) the negative charges on the left plate.
Those negative charges will go towards the positive charge of the battery leaving behind positive charges on the left plate. Here is the reallocation of charges occurring.No current streams across the gap.The capacitor is supposed to be charged.
Surface tension
What is surface tension simple definition?
Surface tension is the property of a liquid surface in which the surface behaves like a thin elastic film which is attempting to minimize the area and is made by the cohesiveness of the like molecules at the surface.
What is the cause of surface tension class 11?
Every frame work in the universe tends to limit its potential energy. In like manner,a liquid additionally tends to minimize its surface area accordingly reduce the number of molecules residing on the free surface of the liquid.
A solid electrostatic force considered the ‘Vander Waals forces’ acting between the neighboring water molecules making them to stick to one another.
A molecule in touch with the neighbor is in low state of energy than if it were separated from everyone else.The molecules present in the outer layer of the liquid have strong surface tension since they are sharing the charge among fewer molecules(boundary molecules are absent).Accordingly they have higher energy.
What are 3 surface tension examples?
- An insect can be ‘able to walk’ on water surface due to surface tension of water.
- The ‘capillary action of water (water filling up a thin tube when it is immersed in a trough of water) is due to surface tension.
- Soaps and detergents help the cleaning of clothes by lowering the surface tension of water.
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