You need to construct a 200 pF capacitor for a science project. You plan to cut two L×L metal squares and place spacers between them. The thinnest spacers you have are 0.400 thick. What is the proper value of L ?

The proper value is 95 cm

Explanation:

Capacitors are a very common electronic components used to store charge for a period. The simplest kind of capacitors (and very studied on physics class ) are the two parallel plates capacitor. It consists of two parallel plates and some space between them, one plate is connected to a positive terminal of a source of voltage and the other pate is connected to the negative terminal. The capacitance of a parallel plate capacitor is:

with d the distance between the plates, A the area of the plates and εo the permittivity of vacuum that is

Knowing the area of a square plate is A=LxL = :

Solving for L:

i think the answer would be b