Per11_over

# Per11_over - Preview of Period 11: Electric Current 11.1...

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Preview of Period 11: Electric Current 11.1 Electric Charge How does electric charge do work? 11.2 Electric Circuits How does a flashlight work? 11.3 Electric Current What is electric current? 11.4 Voltage Boosts and Drops What happens to the voltage of electric charge as it flows through a circuit? 11.5 Electrical Resistance What resists the flow of electric current? 11-1

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Insulating Ring Act. 11.2 Electric Circuits Closed and Open Circuits With a closed circuit With an open circuit the bulb lights the bulb does not light . 11-2 Filament Conducting Pathways
Act. 11.3: Electric Current Current = Amount of Charge moved Elapsed Time I = current (in amperes) Q = charge (in coulombs) t = time elapsed (in seconds) (Ex. 11.1) How much charge must flow to provide a current of 10 amps for 20 seconds? Solve the current equation for Q by multiplying both sides by t: 11-4 t I = = = 10 amps x 20 sec = 200 coul

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Flowing Charge = Electric Current Negative charges flow from the inner Leyden jar, through the bulb filament, and onto the positively charged outer Leyden jar. This flow of charge is an electric current. 11-3
Measuring Current with a Multimeter 1. Turn the dial to the current symbol ( A ). 2. Place one wire lead in the bottom right outlet (marked “COM”). Place the other lead in the top left outlet (marked “10 A”). 3. To measure the current through the bulb, clip the ends of the leads into the circuit. A 11-5 10 A COM

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Act.11.4: Voltage Boosts and Drops Voltage Boosts As a battery pushes charge through a circuit, it increases the electrical potential energy of the charge. The potential energy per unit charge, or voltage, increases when charge flows through a battery. When batteries are connected in series,
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## This note was uploaded on 06/11/2011 for the course PHYSICS 103 taught by Professor Staff during the Spring '10 term at Ohio State.

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Per11_over - Preview of Period 11: Electric Current 11.1...

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