If a 500 Ω resistor has 1.5 mA through it, what is the voltage across it?

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Prepare for the BCTC Industrial Maintenance Technology AMTEC - NOCTI Mechatronic Assessment Test. Study through flashcards, multiple choice questions with hints and explanations. Ace your test with confidence!

Multiple Choice

If a 500 Ω resistor has 1.5 mA through it, what is the voltage across it?

Explanation:
Voltage across a resistor comes from multiplying the current by the resistance: V = I × R. Here, the current is 1.5 mA, which is 0.0015 A, and the resistance is 500 Ω. Multiply: 0.0015 A × 500 Ω = 0.75 V. So the voltage is 0.75 volts. If you keep the current in milliamps, 1.5 mA × 500 Ω equals 750 mV, which is the same value expressed in millivolts. The other numbers come from not converting units or decimal placement.

Voltage across a resistor comes from multiplying the current by the resistance: V = I × R. Here, the current is 1.5 mA, which is 0.0015 A, and the resistance is 500 Ω. Multiply: 0.0015 A × 500 Ω = 0.75 V. So the voltage is 0.75 volts. If you keep the current in milliamps, 1.5 mA × 500 Ω equals 750 mV, which is the same value expressed in millivolts. The other numbers come from not converting units or decimal placement.

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