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Difficulty: EasyVoltage and Electromotive Force (EMF)

Which unit of measurement is used to quantify electromotive force (EMF) or electrical potential difference in a circuit?

  1. A
    Amperes
  2. VoltsAnswer
  3. C
    Ohms
  4. D
    Watts

Answer

Volts
Volts are the standard unit of measurement for electromotive force (EMF) and electrical potential difference. Electromotive force provides the electrical pressure required to drive current through a closed circuit.

Step-by-Step Solution

1
Identify the electrical quantity specified in the question.
The target quantity is electromotive force (EMF), also known as potential difference or voltage.
Electromotive force is the electrical pressure that causes charge carriers to move through a conductor.
2
Match the identified electrical quantity with its standard unit of measurement.
Electromotive force and potential difference are measured in volts (VV).
One volt is defined as one joule of electrical potential energy per coulomb of charge (1 V=1 J/C1\text{ V} = 1\text{ J/C}).

Key Concept

Voltage and Electromotive Force (EMF)
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Topics

Voltage and Electromotive Force (EMF)

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