Chris is making a capacitor with capacitance of 1 microfarad. the voltage across the plates is 9 volts. how many electrons need to be on the negatively charged plate? the charge of an electron is 1.6 × 10–19 coulombs. 5.6 × 10 ^13 electrons 1.4 × 10 ^-24 electrons 9.0 × 10 ^-6 electrons 1.4 × 10 ^-18 electrons

Explanation :

Capacitance of a capacitor,

Potential across the plates,  

We know that the capacitance of a capacitor is given by :

We have to find the number of electrons.

since, q = ne (Charge is quantised)

n is the number of electrons.

So, ne = CV

or

So, the no. of electrons need to be on the negatively charged plate is .

Hence, this is the required solution.                

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explanation:

wheres the pic