A solid sphere of radius R and dielecti R. A point charge K has spherical cavity of radius 9, is placed in the cavity. Another charge q, is placed outside the sphere at a distance of r from 9.. then coulombic force of interaction between them is found to be F. When the same charges are separated by same distance in vacuum, the force of interaction between them is found to be F. then

Q: What is .43 ms coverted into seconds. I put .00043 seconds and it was marked as incorrect.

A: 0.43 ms can be converted into seconds as follows.

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.