NEIEP Mechanics Practice Exam

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Prepare for the NEIEP Mechanics Exam with multiple choice questions, hints, and detailed explanations. Ace your test and advance your career!

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If the current is 120mA and the voltage is 245 VDC, what is the power consumption?

  1. 20.4 Watts

  2. 29.4 Watts

  3. 30 Watts

  4. 29 Watts

The correct answer is: 29.4 Watts

To find the power consumption, you can use the formula for electrical power, which is calculated by multiplying voltage (V) by current (I). In this case, the current is given as 120 mA, which needs to be converted to amperes for calculation. Since 120 mA is equal to 0.120 A, you can now plug the values into the power formula: Power (P) = Voltage (V) × Current (I) Substituting the values: P = 245 V × 0.120 A P = 29.4 Watts This calculation shows that the power consumption is indeed 29.4 Watts, confirming that the choice reflecting this value is correct. Understanding that power is the product of voltage and current helps solidify crucial concepts in electrical and mechanical systems.

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