Exp 04 Simple circuits - Experiment 04 To study Voltage and Current in Simple Circuits(Voltage Sensor Current Sensor DataStudio file 04 Simple

# Exp 04 Simple circuits - Experiment 04 To study Voltage and...

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Experiment 04: To study Voltage and Current in Simple Circuits (Voltage Sensor, Current Sensor) DataStudio file: 04 Simple Circuits.ds E&M: Voltage and current Equipment List 1 PASCO interface (for two sensors) Power Supply 1.5 volt 1Current Sensor 1AC/DC Electronics Lab 1Voltage Sensor Connect the voltage Sensor to the interface on channel A Connect the Current Sensor to the interface on channel B Introduction The purpose of this activity is to explore what happens to the voltage and the current in a simple circuit composed of batteries and light bulbs arranged in series and then arranged in parallel. Use a voltage sensor, a current sensor, and the DataStudio software to measure the voltage across parts of the series and parallel circuits and a current sensor to measure the current through the circuits. Voltage is the ratio of electric potential energy to charge. One volt is one joule of energy per one coulomb of charge. Current is the volume of electric charge, or the number of charges per second moving past a point in an electric circuit. The unit for current is the ampere and one ampere is one coulomb of charge per second. In a simple circuit of a battery connected to a light bulb, the battery is a voltage source, and the light bulb is a ‘load’. Light bulbs in a series circuit are connected end-to-end like links in a chain bracelet. Imagine a circuit with one light bulb in it. What would happen to the brightness of the light bulb if a second light bulb were added in series to the first light bulb? What would happen to the voltage across each individual bulb as more and more bulbs are added in series to the circuit? What would
happen to the current through the circuit as more and more bulbs are added in series to the circuit? Light bulbs in a parallel circuit are connected side-by-side like rung in a stepladder. Again imagine a circuit with one light in it. What would happen to the brightness of the light bulb if a second light bulb were added in parallel to the first light bulb? What would happen to the voltage across each individual bulb as more bulbs are added in parallel to the circuit? What would happen to the current through the circuit as more and more bulbs are added in parallel to the circuit?
Prediction 1. If one bulb in a series circuit is removed, what happens to the rest of the bulbs?

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• Fall '14
• Current, Power, power supply, Incandescent light bulb, Series and parallel circuits, Bulb