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Zorluk: OrtaVoltage and Electromotive Force (EMF)

A technician needs to measure the electromotive force (EMF) across an operating direct-current (DC) circuit component. Which of the following describes the correct meter configuration and the property being measured?

  1. A
    Connect the meter in series with the component to measure the rate of charge flow in amperes
  2. B
    Connect the meter in series with the component to measure the electrical pressure in volts
  3. Connect the meter in parallel with the component to measure the potential difference in voltsCevap
  4. D
    Connect the meter in parallel with the component to measure the current draw in amperes

Cevap

Connect the meter in parallel with the component to measure the potential difference in volts
Electromotive force (EMF) is the measure of electrical pressure or potential difference between two points, quantified in units of volts. Because voltage is a relative measurement across two nodes, the meter must be connected in parallel across the component under test.

Adım Adım Çözüm

1
Identify the electrical property defined by electromotive force (EMF)
EMF represents electrical pressure or potential difference, which is quantified in volts (VV).
Electromotive force is the energy per unit charge that drives electrons between two points in a circuit.
2
Determine the proper meter placement for measuring potential difference
The voltmeter must be connected in parallel (across) the component.
Potential difference is measured between two distinct points; connecting in parallel allows the high-impedance meter to sample the voltage drop without disrupting circuit current.

Anahtar Kavram

Electromotive force (EMF) is the potential difference or electrical pressure across two points, measured in volts using a voltmeter connected in parallel.
Tahmini Süre:45s
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Voltage and Electromotive Force (EMF)

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