Electric field inside a dielectric
Why does the electric field inside a dielectric decrease when it is placed in an external electric field?
(Thushara asked)
Answer:
The net electric field inside a dielectric decreases due to polarization. The external electric field polarizes the dielectric and an electric field is produced due to this polarization. This internal electric field will be opposite to the external electric field and therefore the net electric field inside the dielectric will be less
Categories: Answers, Electrostatics Tags: answer, dielectric, Electric, electric field, external electric field, field, polarization, Thushara
What is meant by charge on a capacitor?
Mohit asked this question:
“What is meant by charge on a capacitor?”
Answer: As we know, a simple capacitor (say a parallel plate capacitor) 
consists of two plates parallel to each other. When charged, charge on either plate of the capacitor is called charge on the capacitor.
The following links will help you explore further and understand more
- http://www.kpsec.freeuk.com/components/capac.htm
- http://hyperphysics.phy-astr.gsu.edu/hbase/electric/capac.html
- http://www.youtube.com/watch?v=zNpbdptwxlQ
- http://www.youtube.com/watch?v=qdXbnhb1bVo&feature=related
Categories: Answers, CBSE, Current Electricity, ELECTROSTATICS, Electrostatics, Entrance Exams Tags: capacitance, capacitor, charge on a capacitor, principle of a capacitor
