a lot without knowing their existence is what is called a "capacitor." Many people have heard the word capacitor‚ but also many do not even have an idea of what it means or what is the use for it. In this research‚ I will concentrate on explaining the physics of a capacitor and describing the main types of capacitors that exist today. A capacitor is a device used to store charge in an electrical circuit. The function of a capacitor is much similar to a battery‚ but it charges and discharges
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1 Capacitor & Dielectric Miss Nor Amalina Ahmad 2012 1.1 1.2 1.3 1.4 1.5 Capacitance Capacitor in series & parallel Energy stored in a charged capacitor Charging & discharging of capacitors Capacitors with dielectric Miss Nor Amalina Ahmad 2012 1.1 Capacitance Learning Outcomes : At the end of this topic‚ students should be able to: Define capacitance Use the capacitance formula Determine capacitance of parallel plate Miss Nor Amalina Ahmad 2012 A capacitor is electric
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Series & Parallel Capacitors Practice Problems Name: AP Physics Period: 1. What value is the same for any two capacitors in series? Why? 2. What value is the same for any two capacitors in parallel? Why? 3. You have two capacitors of 0.40 F and 0.60 F. a) What is the equivalent capacitance if you add them in series? b) What is the equivalent capacitance if you add them in parallel? 4. Three capacitors: 0.20 F‚ 0.08 F and 0.40 F‚ are connected in series
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space between a parallel-plate capacitor of area S is filled with a dielectric whose permittivity varies linearly from 1 at one plate (y=0) to 2 at the other plate (y=d). Neglecting fringing effect‚ find the capacitance. 7. Three capacitors 1 C ‚ 2 C ‚ and 3 C are connected as shown in Figure across a 240-volt source. Calculate the electric energy stored in each capacitor. 1F 2 F 3F + - 240(V) 8. A parallel-plate capacitor of width w‚ length L‚ and separation
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Common Types of Capacitors: The compounds or systems that usually consist of two different terminals are used for storing electric power‚ are commonly referred to as capacitors. They form an essential part of any electronic equipment or circuit because they help in the storage of power. The characteristics of the capacitors‚ i.e. the voltage it can withstand‚ material it is made up of etc. are what generally define the ability or the potential of a capacitor. Capacitance is what is generally used
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Title : C2 Investigating the capacitance of a capacitor I. Objective : * To investigate the factor which affect the capacitance of a parallel-plate capacitor using a reed switch. II. Apparatus * Reed Switch * Signal generator * Capacitor Plates (1 pair) * Polythene spacers * Low voltage power supply * Voltmeter * Variable resistance * Light-beam galvanometer * CRO * Standard mass (eg. 100g ) * Connecting leads * Drawing board *
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device has been dubbed a super capacitor by 18-year-old Esha Khare‚ of Saratoga - as she took home $50‚000 from the Intel International Science and Engineering Fair‚ which took place in Phoenix this week. The device will make waiting hours for a phone to charge a thing of the past and the gizmo packs more energy into a smaller space than traditional phone batteries and holds the charge for longer. Eesha Khare made the breakthrough by creating small super capacitor that can fit inside a cell phone
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CHAPTER 2 CAPACITOR & DIELECTRIC Subtopics 2.1 2.2 2.3 2.4 Capacitance‚ Capacitor in series & parallel Charging & discharging of capacitors Capacitors with dielectric Energy stored in a charged capacitor 2.1 Capacitance‚ Capacitor in series & parallel Learning Outcomes: At the end of this topic‚ students should be able to: Define capacitance Use the capacitance formula Determine capacitance of parallel plate Deduce & calculate the effective capacitance of capacitors in series & parallel
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Title: To investigate the discharging of a capacitor through a multimeter as voltmeter Objective: To determine the internal resistance of a multimeter Apparatus and Materials: 1. Capacitor 2. Multi-meter 3. Power supply 4. Switch 5. Stop watch 6. Connecting wires Setup : 1 The circuit was constructed as Figure 5-1. 2 Ensure that the positive terminal of the power supply was connected to the positive terminal of the capacitor if an electrolytic capacitor. 3 Initially‚ switch S should be closed.
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March‚ 2010 Title: Investigating the capacitance of a parallel-plate capacitor using a reed switch Objective: To investigate the factors which affect the capacitance of a parallel-plate capacitor using a reed switch. Apparatus: - reed switch - signal generator - capacitor plates of area about 0.24m X 0.24 m 1 pair - polythene spacers ( 10 X 10 X 1 mm ) - polythene sheet‚ same area as capacitor plate 1 mm thick - battery box with 4 cells
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