Engineering Notation Problem?

Question

I have to convert 4.9 ohms into M (Mega) ohms. Is the answer 4.9 M ohms? Also, can engineering notation be as a decimal like .0035 *10^3? Please help.
Thank you!

Answer 1

Your question is specifically about writing numbers using engineering notation. Engineering notation is simply a predefined and pre-agreed upon format for how to write very large/very small numbers.



Engineering notation generally requires the first and second numerals/digits to not be zeroes. It also requires the decimal point to be moved after the first numeral, along with the use of scientific notation (powers of 10). Thus, the number 100 in engineering notations would be written as 1.0 * 10^2, and the number 0.01 would be written as 1.0 * 10^-2.



Writing 4.9Ω using dimensions of MΩ makes it 0.0000049 MΩ. Using engineering notation, this is written as 4.9 * 10^-6 MΩ, or even 4.9E-06 MΩ (this last is using computerized scientific/engineering notation - as Microsoft Excel would use).



In your second example (of the .0035), the first two numerals are both 0 so currently this does not use (is not in) engineering notation. Most engineers prefer that neither of the first numerals are a zero. If you follow that approach, then 0.0035 * 10^3 should be converted to engineering notation by first shifting the decimal point to be after the first non-zero digit (which means the decimal point should be after the 3) and then we accordingly adjust the 10^N power to keep the overall number the same. Your number in engineering notation will be



3.5 * 10^0 or 3.5E00 or even simply as 3.5



Hope this explains what's meant by engineering notation.

Answer 2

Excel Engineering Notation

Answer 3

HI Pandora..

1 ohm is .000001 megohm and yes its easier to understand when described as 1 ohm ..also as a matter of convenience when using notations you'll see 2200 ohms and 2.2k ohms ,as well as 660k ohms which is 660000 ohms .Now when the numerical amount gets above the 999.999k ohms its going to go to megohm(M) and written as .999999M ohm is one ohm away from the magical 1meg ohm quantity... In using scientific notation 5 x 10^6 is harder than 5M ...one last thing about this to properly write the SI unit Mega use a capital M ..ex: 2M ohm = 2 million ,i'm sure you get the point...have a good one..."everyone has a problem at something, the smartest try to solve theirs by asking questions"cR wjj..... always check my work,,, have a good one from the E..

Answer 4

1,000,000 Ω = 1 MΩ

so 4.9 Ω = 0.0049 kΩ

so 4.9 Ω = 0.0000049 MΩ

(move decimal point 6 places)



don't understand your second question.





SI (metric) prefixes:



da (deca) = x10 (rarely used)

h (hecto) = x100 (rarely used)

k (kilo) = x1000 = e3

M (Mega) = x1000000 = e6

G (Giga) = x1000000000 = e9

T (Tera) = x1000000000000 = e12

P (Peta) = x1000000000000000 = e15

E (Exa) = x1000000000000000000 = e18

Z (Zetta) = x1000000000000000000000 = e21



d (deci) = /10 = e-1 (rarely used)

c (cent) = /100 = e-2 (rarely used except for cm)

m (milli) = /1000 = e-3

µ (micro) = /1000000 = e-6

n (nano) = /1000000000 = e-9

p (pico) = /1000000000000 = e-12

f (femto) = /1000000000000000 = e-15

a (atto) = /1000000000000000000 = e-18



http://en.wikipedia.org/wiki/Metric_prefixes