Jan 8, 2010
186
0
0
Status
Pre-Medical
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?????
 

RogueUnicorn

rawr.
7+ Year Member
Jul 15, 2009
9,746
1,595
181
Status
Resident [Any Field]
0.00125W is 1.25mW. what you're thinking is MW, or megwatts.
 

RogueUnicorn

rawr.
7+ Year Member
Jul 15, 2009
9,746
1,595
181
Status
Resident [Any Field]
this is basic SI unit info- mW is miliwatt, MW is megawatt.