Concerning electrical engineering, about ac circuits, how do i add (1/10) with (1/j5) and with (1/(2+j2)) plz.

Answer 1

Do you mean add or simplify the expression:
1/10 + 1/j5 + 1/(2 + j2)
The lowest common denominator is 10(j5)(2 + j2), That's the LCD
You have to multiply top and bottom of the first fraction by j5(2 + j2)
multiply top and bottom of the second fraction by 10(2 + j2)
And multiply top and bottom of the third fraction by 10(j5)
Then multiply and combine terms and you get:
(20 + 10 j2 + + 12 j5 + j2j5)/LCD