2B Virtual Lab Capacitors_Lab3.docx - Phys2B-Lab 3...

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Phys2B-Lab 3: Capacitors Through PhET ( ) Original Author, Arooj Mukarram of The Prairie School (2018), adapted by Roger Key, California State University, Fresno Physics Department. (2020) Link to simulation : - basics_en.html Some Review and Background Information: Resistors and Capacitors: How Capacitors Work: Theory : The charge on a capacitor, while charging, is directly proportional to the applied potential across its terminals and the capacitance of the capacitor. It is calculated as: ? = ? × 𝑉 ( 1) Where: Q is the Charge (Coulombs), C is the Capacitance (farads), and V is the Potential (volts.) For a parallel plate capacitor, capacitance (C) depends upon area of the plates, distance between plates and medium between plates. It is given as: C = A ϵ d = κ ϵ o A d ( 2) OBJECTIVES: • (Capacitor connected to battery): Study the effect of changing the voltage across a capacitor, its plate area and separation distance on the capacitance, charges on plates and electric field between plates. • (Charged capacitor disconnected from battery): Study the effects of changing the plates area and separation distance of a capacitor on the voltage across the plates, charges on plates and electric field between plates. • Study the effects of changing the capacitance of a discharging of a capacitor through a light bulb. INTRODUCTION [Write your introduction here.] PART 1 : Parallel Plate Capacitor – Battery Connected Note the time you begin this activity: [insert your answer here] (you will need this information later) Start the simulation with the link above and choose “Capacitance.”

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