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Question 201

What formula is used to calculate voltage in a circuit?

  1. E = I x RCorrect answer
  2. E = I / R
  3. E = I² x R
  4. E = I² / R

Explanation

Ohm's law in its basic form states that voltage equals current times resistance, E = I × R. The squared forms belong to power calculations, not to voltage.

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Question 201: What formula is used to calculate voltage in a circuit? · FCC Technician Class (Element 2) · Questena