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Published byGabriel Lucas Modified over 5 years ago

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Potential Difference (Voltage)

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Potential Difference Potential difference, or voltage, is the difference in electric potential energy per unit of charge measured at two points. The symbol for potential difference or voltage is V. The units of potential difference or voltage is volts (V).

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Potential Difference can be compared to the flow of water from water towers. From which tap will the water exit with the greatest force? Why?

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Potential Difference can be compared to the flow of water from water towers. From which tap will the water exit with the least force? Why?

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Another Potential Difference Analogy

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VOLTMETERS are used to measure the __________________________ in a circuit. potential difference / voltage How to use a VOLTMETER

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V0V0 I1I1 V 0 is the voltage across the power source. V 1 is the voltage across the bulb. Example:We want to measure the voltage at V 0 and V 1 for the circuit below. V1V1

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To measure the voltage at V 0 and V 1, the circuit is ______________________. The voltmeter is connected in ____________. NOT disconnected How to use a VOLTMETER parallel

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Connect the terminal of the voltmeter to the wire(s) leading to the ___________________terminal of the power source. positive / red How to use a VOLTMETER positive / red

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Connect the terminal of the voltmeter to the wire(s) leading to the ___________________terminal of the power source. negative / black How to use a VOLTMETER negative / black

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How to use a VOLTMETER I1I1 To measure V 0 :

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How to use a VOLTMETER I1I1 To measure V 0 :

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How to use a VOLTMETER I1I1 To measure V 1 :

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How to use a VOLTMETER I1I1 To measure V 1 :

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How to Read a VOLTMETER

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What is the reading on this voltmeter?

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How to Read a VOLTMETER What is the reading on this voltmeter? If you connected the circuit to the 3V setting on the voltmeter, then the voltage reading is 1.5 V. If you connected the circuit to the 1V setting on the voltmeter, then the voltage reading is 0.5 V.

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