Tolong suatu rangkaian mempunyai R1= 4 Ohm R2= 3 Ohm R3=2Ohm R4=6Ohm. Berapakah hambatan penggantinya,jika rangkaian disusun secara : a.seri b.paralel

a. 1/Rseri = 1/R1 + 1/R2 +1/R3 +1/R4
= 1/4 + 1/3 +1/2+ 1/6
= 3/12 + 4/12 +6/12 + 2/12
= 15/12
Rseri = 12/15 = 4/5 john
R paralel = 4+3+2+6 = 15 ohm