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The best would be Bakliwal Tutorials. Right Now BT has the strongest faculty team of any institute in Pune, there is no match to what BT has now. To tell about a few teachers without taking names
In Physics teachers have produced AIR 2 and great results each year. In Chemistry one of the best organic Chemistry teachers in India, a teacher who has mentored about 50 other teachers and has produced AIR 1 and many single-digit ranks. In Maths a teacher who has published more than 50 books including books for JEE Advanced. Most of the teachers at BT are IITians themselves and the feedback of teachers is more than 90 % which is unparalleled in Pune. Bakliwal is one institute where a student is really heard. The greatest gem of BT is Vaibhav Bakliwal sir who is always determined to help all the students reach their maximum potential and one session with him will fill you with enthusiasm and a desire to achieve the best that you can.

Hi Vicky,
A capacitor is a passive two-terminal electrical component that stores electrical energy in an electric field. The effect of a capacitor is known as capacitance. While capacitance exists between any two electrical conductors of a circuit in sufficiently close proximity, a capacitor is specifically designed to provide and enhance this effect for a variety of practical applications by consideration of size, shape, and positioning of closely spaced conductors, and the intervening dielectric material. A capacitor was therefore historically first known as an electric condenser.
In short, it is a device used to store an electric charge, consisting of one or more pairs of conductors separated by an insulator.
All the best.