Aparallel-plate capacitor has plates of 4.30 cm by 4.20 cm. the plates are separated by a 0.300-mm-thick piece of paper. what is the capacitance c of this capacitor? the dielectric constant for paper is 2.1.

Explanation:

The capacitance of a parallel-plate capacitor is given by the formula:

where k is the dielectric constant of the material between them, A the area of the plates, d the distance between them and the permittivity, an universal constant.

Since the area of the plates is the product of their sides a=4.3cm=0.043m and b=4.2cm=0.042m, in S.I. we have:

explanation:

the masses of the objects and the distance between them