Question

this question i don't understand either arghh...
Determine the result of multiplying 2.66 mA by 5.92 V (the unit for the answer is W)

Answer 1

You need to keep in mind that mA represents milliamperes, or one thousandth of an Ampere. Does that help?

Answer 2

isnt that ohms law? 2.66 mA is (2.66 X 10^-3 A), so just multiply that by the 5.92V and do dimensional analysis to convert the units. One volt is W/A and watts are J/s. If you multiply an ampere times a volt, the ampere will cancel and leave you with watts.

Answer 3

agh, maybe not ohms law, sorry it was my first thought and i just didnt edit it out when i worked it out.

Answer 4

i'm confused with the units.... i know the one thousands of an amp. but it says multiple by 5.92 volts...

Answer 5

how do i put it so where its watts. or W

Answer 6

multiply the numbers then the units will follow. W/A * A makes the A go away. All you have left is W.

Answer 7

One Volt multiplied by One Ampere is one Watt.

Answer 8

so convert 2.66 mA to .00266a right? or no? and multiple that by 5.92 which would be .0157472?

Answer 9

yes

Answer 10

move the decimal point 3 places, so 2.66 milliAmperes is equal to 0.00266 Amperes.