A device uses 2500 milliwatts. How many watts is that?

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Multiple Choice

A device uses 2500 milliwatts. How many watts is that?

Explanation:
To convert milliwatts to watts, you divide by 1000 because 1 watt equals 1000 milliwatts. So 2500 milliwatts becomes 2500 ÷ 1000 = 2.5 watts. The milli- prefix means one thousandth, so moving the decimal three places left gives the correct value. For context, 0.25 W would be 250 mW, 25 W would be 25,000 mW, and 2500 W would be 2,500,000 mW. This confirms 2500 mW is 2.5 W.

To convert milliwatts to watts, you divide by 1000 because 1 watt equals 1000 milliwatts. So 2500 milliwatts becomes 2500 ÷ 1000 = 2.5 watts. The milli- prefix means one thousandth, so moving the decimal three places left gives the correct value. For context, 0.25 W would be 250 mW, 25 W would be 25,000 mW, and 2500 W would be 2,500,000 mW. This confirms 2500 mW is 2.5 W.

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