The value of permittivity of material, other than air or space is:
Correct answer: A. Greater than unity
- A. Greater than unity
- B. Less than unity
- C. Equal to unity
- D. Zero
Explanation
The value of permittivity of a material is inversely proportional to its tendency to allow coulombic interactions. The greater the value of permittivity, the lesser it allows electric field lines to pass. The permittivity of air or space is given a general reference value of 1. All materials have a lesser permittivity than air or space. As the tendency to permit electric field lines decreases, its value of permittivity becomes greater than one. Hence, A option is the correct option.
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Electrostatics describes forces between charges through Coulomb's law, electric fields and field intensity, then uses electric potential to measure energy per unit charge. Capacitors store charge and electrical energy, with capacitance depending on geometry and dielectric material, not simply on the amount of charge present.
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