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Measuring Electricity

Measuring Electricity. You measure. How do we measure Electricity?. Current ( I). The number of electrons passing a point in a circuit every second Connected in series to a circuit Measured in amperes or amps (A). Electric Potential (V). Also known as Voltage

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Measuring Electricity

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  1. Measuring Electricity

  2. You measure...

  3. How do we measure Electricity?

  4. Current (I) • The number of electrons passing a point in a circuit every second • Connected in series to a circuit • Measured in amperes or amps (A)

  5. Electric Potential (V) • Also known as Voltage • The force that moves or pushes electrons through a circuit • Connected in parallel to a circuit. • Measured in volts (V)

  6. Resistance (R) • Resists or reduces the current in a circuit • Converts electrical energy into other forms of energy (heat, light, motion, sound) • Measured in Ohms (Ω)

  7. Resistance (R) • Ohm’s Law states that the larger the resistance, the smaller the current • R = V/I

  8. Measuring Voltage and Current Voltmeter Ammeter • Measures the voltage drop in a circuit in volts (V) • Measures the amount of electric current flowing past a point in a circuit in amps (A)

  9. Measuring Voltage and Current Voltmeter Ammeter • Connected to a circuit in parallel between two points • Connected to a circuit in series

  10. Multimeter • Can be used to measure current, voltage or resistance • When the meter is set to read current, it must be connected in series • When the meter is set to read potential difference, it must be connect in parallel with the load

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