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Two 3.0 cm \times 3.0 cm square aluminum electrodes, spaced 0.70 mm apart are connected to a 100...

Question:

Two 3.0 cm {eq}\times {/eq} 3.0 cm square aluminum electrodes, spaced 0.70 mm apart are connected to a 100 V battery.

(a) What is the capacitance? (in pF)

(b) What is the charge on the positive electrode?

Capacitance:

Capacitance measures the amount of charges that can be stored in a capacitor. The unit for capacitance is in Farad. Such that the capacitance is also proportional to the voltage applied across the capacitor.

Answer and Explanation:


(a) The capacitance os a parallel plate capacitor is given by:

{eq}C = \frac{k\epsilon_0 A}{d} {/eq}

Where k is the dielectric constant,...

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Capacitance: Units & Formula

from UExcel Physics: Study Guide & Test Prep

Chapter 12 / Lesson 7
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