An electrophorus is charged (as in electrostatics II). It briefly touches one te

Question

An electrophorus is charged (as in electrostatics II). It briefly touches one terminal of a capacitor so that a positive charge, +Q, is put on the plate of the capacitor that is connected to the terminal. After the electrophorus is removed, we have;

----(+Q)I I-----

Will any changes take place at other plate (on the right of the diagram)? If so, draw the charge on the following diagram and explain why it appears. Your explanation must include reasons for the sign and size of any charge that appears and say how these electrostatic charges originate.

----(+Q)I I-----

If nothing happens to the other plate then explain why not.

Explanation / Answer

other plate will have -Q charge ( it will be induced charge)

why induced charge???

because once one plate is charged so medium will be polarised and other plate will get -Q due to induction

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