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Amps, Volts and Ohms Units of Electrical Measurement

Amps, Volts and Ohms Units of Electrical Measurement

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Page 1: Amps, Volts and Ohms Units of Electrical Measurement

Amps, Volts and Ohms

Units of Electrical Measurement

Page 2: Amps, Volts and Ohms Units of Electrical Measurement

Units of Electrical Measurement

1. Amperes: (Amps) a measure of the number of electrons in an electrical current.

• 1 Amp= 6,281,000,000,000,000,000 electrons• (six quintillion two hundred eighty one quadrillion)

Page 3: Amps, Volts and Ohms Units of Electrical Measurement

Units of Electrical Measurement

2. Voltage: A measure of electrical pressure, force or push on electrons in a circuit.

Page 4: Amps, Volts and Ohms Units of Electrical Measurement

Units of Electrical Measurement

• Ohms: A measure of the resistance to the flow of electrons in a circuit.

Page 5: Amps, Volts and Ohms Units of Electrical Measurement

Ohm’s law

•states the mathematical relationship between current, voltage and ohms of resistance.

Page 6: Amps, Volts and Ohms Units of Electrical Measurement
Page 7: Amps, Volts and Ohms Units of Electrical Measurement

Quanity Measured

Measuring Instrument

Unit Abrevi-ation

Ohms Law Symbol

Page 8: Amps, Volts and Ohms Units of Electrical Measurement

Quanity Measured

Measuring Instrument

Unit Abrevi-ation

Ohms Law Symbol

Ampere“Current”

Page 9: Amps, Volts and Ohms Units of Electrical Measurement

Quanity Measured

Measuring Instrument

Unit Abrevi-ation

Ohms Law Symbol

Ampere“Current”

Ammeter

Page 10: Amps, Volts and Ohms Units of Electrical Measurement

Quanity Measured

Measuring Instrument

Unit Abrevi-ation

Ohms Law Symbol

Ampere“Current”

Ammeter Amp

Page 11: Amps, Volts and Ohms Units of Electrical Measurement

Quanity Measured

Measuring Instrument

Unit Abrevi-ation

Ohms Law Symbol

Ampere“Current”

Ammeter Amp a

Page 12: Amps, Volts and Ohms Units of Electrical Measurement

Quanity Measured

Measuring Instrument

Unit Abrevi-ation

Ohms Law Symbol

Ampere“Current”

Ammeter Amp a I

Page 13: Amps, Volts and Ohms Units of Electrical Measurement

Quanity Measured

Measuring Instrument

Unit Abrevi-ation

Ohms Law Symbol

Ampere“Current”

Ammeter Amp a IVoltage

PressureEMF

Page 14: Amps, Volts and Ohms Units of Electrical Measurement

Quanity Measured

Measuring Instrument

Unit Abrevi-ation

Ohms Law Symbol

Ampere“Current”

Ammeter Amp a IVoltage

PressureEMF

Voltmeter

Page 15: Amps, Volts and Ohms Units of Electrical Measurement

Quanity Measured

Measuring Instrument

Unit Abrevi-ation

Ohms Law Symbol

Ampere“Current”

Ammeter Amp a IVoltage

PressureEMF

Voltmeter Volt

Page 16: Amps, Volts and Ohms Units of Electrical Measurement

Quanity Measured

Measuring Instrument

Unit Abrevi-ation

Ohms Law Symbol

Ampere“Current”

Ammeter Amp a IVoltage

PressureEMF

Voltmeter Volt v

Page 17: Amps, Volts and Ohms Units of Electrical Measurement

Quanity Measured

Measuring Instrument

Unit Abrevi-ation

Ohms Law Symbol

Ampere“Current”

Ammeter Amp a IVoltage

PressureEMF

Voltmeter Volt v E

Page 18: Amps, Volts and Ohms Units of Electrical Measurement

Quanity Measured

Measuring Instrument

Unit Abrevi-ation

Ohms Law Symbol

Ampere“Current”

Ammeter Amp a IVoltage

PressureEMF

Voltmeter Volt v E

OhmsResistance

Page 19: Amps, Volts and Ohms Units of Electrical Measurement

Quanity Measured

Measuring Instrument

Unit Abrevi-ation

Ohms Law Symbol

Ampere“Current”

Ammeter Amp a IVoltage

PressureEMF

Voltmeter Volt v EOhms

ResistanceOhmmeter

Page 20: Amps, Volts and Ohms Units of Electrical Measurement

Quanity Measured

Measuring Instrument

Unit Abrevi-ation

Ohms Law Symbol

Ampere“Current”

Ammeter Amp a IVoltage

PressureEMF

Voltmeter Volt v EOhms

ResistanceOhmmeter Ohms

Page 21: Amps, Volts and Ohms Units of Electrical Measurement

Quanity Measured

Measuring Instrument

Unit Abrevi-ation

Ohms Law Symbol

Ampere“Current”

Ammeter Amp a IVoltage

PressureEMF

Voltmeter Volt v EOhms

ResistanceOhmmeter Ohms Ω

Page 22: Amps, Volts and Ohms Units of Electrical Measurement

Quanity Measured

Measuring Instrument

Unit Abrevi-ation

Ohms Law Symbol

Ampere“Current”

Ammeter Amp a IVoltage

PressureEMF

Voltmeter Volt v E

OhmsResistance

Ohmmeter Ohms Ω R


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