ASVAB · Physics

What is the basic unit of electrical resistance?

Correct answer

Ohm

  1. A Watt
  2. B Ohm
  3. C Ampere
  4. D Volt

Why this is the answer

The OHM is the basic unit of electrical RESISTANCE. ASVAB General Science covers basic physics/electricity. Key electrical units: VOLT (voltage/electrical potential); AMPERE/amp (current); OHM (resistance); WATT (power). OHM'S LAW relates them: V = I × R (Voltage = Current × Resistance). Knowing which unit measures which quantity (ohm = resistance) is commonly tested on both General Science and Electronics Information.
Source: ASVAB General Science — Electricity

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About this topic: Physics

Physics questions cover motion, forces, Newton's laws, energy, heat, sound, light and basic electricity. Units and simple relationships (speed = distance ÷ time, F = ma) are tested more than calculation. This is one of 15 General Science questions on physics, each with a full explanation on a single study page.

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