1.

Unit of permittivity is …….

Answer»

`C^(2)N^(-2)m^(-2)`
`C^(2)N^(-1)m^(-2)`
`C^(2)N^(-1)m^(-1)`
`C^(2)N^(-2)m^(-1)`

SOLUTION :We have `F=(1)/(2pi in_(0))(q_(1)q_(2))/(r^(2)) rArr in_(0)=(q_(1)q_(2))/(4pi Fr^(2))`
`therefore " Unitof " in_(0)=("UNIT of " Q^(2))/(("Unit of F")("Unit of " r^(2)))`
`thereofre` Unit of `in_(0)=(C^(2))/(NM^(2))=C^(2)N^(-1)m^(-2)`


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