NEIEP Mechanics Practice Exam

Question: 1 / 475

What is the calculated voltage when the resistance is 87 ohms and the current is 0.225 amperes?

17.775 volts

19.575 volts

To determine the calculated voltage when given resistance and current, you can use Ohm's Law, which states that voltage (V) is equal to the product of current (I) and resistance (R). The formula is expressed as:

\[ V = I \times R \]

In this case, the resistance is noted as 87 ohms and the current as 0.225 amperes. Plugging these values into the formula gives:

\[ V = 0.225 \, \text{A} \times 87 \, \Omega \]

Carrying out the multiplication:

\[ V = 19.575 \, \text{volts} \]

Therefore, the calculated voltage is 19.575 volts. This aligns with the choice that accurately reflects the calculation based on the given parameters.

The other choices do not match this calculation, indicating that they either stem from incorrect arithmetic or different values that do not correspond with the provided figures for resistance and current.

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20.25 volts

15.4 volts

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