Error on AAMC 10 PS # 32

[wolverine1]

When the ionized air molecules produce an average current of 2.5 ´ 10–4 A at the electrodes, how much power is being generated? (V = 5)

Obviously, the formula to use is P = IV.

(2.5 ´ 10–4 ) x (5) = 0.00125W = 1.25kw.

The answer says it is 1.25mW. This can't be true since there are 1,000,000 watts in 1 mW.

Right?????

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[RogueUnicorn]

0.00125W is 1.25mW. what you're thinking is MW, or megwatts.

 

[wolverine1]

0.00125W is 1.25mW. what you're thinking is MW, or megwatts.

I don't understand. What is the difference between mW and MW.

 

[RogueUnicorn]

this is basic SI unit info- mW is miliwatt, MW is megawatt.

 

[wolverine1]

this is basic SI unit info- mW is miliwatt, MW is megawatt.

got it, thanks.