🔍 Key Concepts
• Use Ohm's Law for AC circuits: ( Z = \frac{E}{I} ), where Z is impedance, E is applied voltage, and I is current
• Distinguish between resistance (R) and impedance (Z) – impedance includes the effect of inductance, resistance does not
• After finding the magnitude of Z, compare it carefully with the answer choices to see which one matches your calculation
💭 Think About
• What basic relationship connects voltage, current, and impedance in an AC circuit? How can you apply that with the given current and voltage?
• Once you compute the impedance from voltage and current, how does that value compare numerically to each choice? Is it close to one of them or clearly different from all?
• Are you accidentally trying to use the resistance (5 ohms) in place of impedance, or can you find impedance directly from the given voltage and current?
✅ Before You Answer
• Be sure you convert the verbal data into clear numbers: voltage (E) in volts, current (I) in amperes
• Compute (Z = E / I) carefully, watching your calculator entry and units
• After you get Z, check: does it fall very close to 367, 350, 360, or is it far enough away that "None of the above" might be more appropriate?