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سؤال 225

How many watts of electrical power are consumed by a 12 VDC light bulb that draws 0.2 amperes?

  1. 2.4 wattsپاسخ درست
  2. 24 watts
  3. 6 watts
  4. 60 watts

توضیح

Power is voltage times current: 12 volts times 0.2 amperes equals 2.4 watts. The larger answers come from misplacing the decimal point in 0.2 amperes.

ادامهٔ این آزمون

شروع تمرین
سؤال 225: How many watts of electrical power are consumed by a 12 VDC… · FCC General Class (Element 3) · Questena