Jawaban:

3. diketahui :

R1 = 4 ohm

R2 = 3 ohm

R3 = 6 ohm

ditanya : R total ?

jawab =

a. Rangkaian seri (Rs)

= R1 + R2 + R3

= 4 + 3 + 6

= 13 ohm

b. Rangkaian paralel (1/Rp)

= 1/R1 + 1/R2 + 1/R3

= 1/4 + 1/3 + 1/6

= (3+4+2)/12

= 9/12 ---> 12/9 = 1,33 ohm

c. R total = R seri + R paralel = 13 + 1,33 = 14,33 ohm

4. diketahui :

R seri = 13 ohm

R paralel = 1,33 ohm

V = 12 volt

ditanya = W (energi listrik)?

jawab = W = V² x t

R

W = 12² x 1 ---> rangkaian seri

13

W = 144/13 = 11,076 = 11 Joule

W = V² x t

R

W = 12² x 1 ---> rangkaian paralel

1,33

W = 144/1,33 = 108,27 = 108 Joule