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<p>Jawaban yang tepat adalah</p><ul><li>a. 23,6 𝞨</li><li>b. 70 𝞨</li></ul><p>&nbsp;</p><p>Pembahasan :</p><p>a. 1/Rp₁ = 1/R₄ + 1/R₅</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 1/4 + 1/6</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = (3 + 2)/12</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 5/12</p><p>&nbsp; &nbsp; &nbsp;Rp₁ = 12/5 = 2,4 𝞨</p><p>&nbsp; &nbsp; &nbsp;&nbsp;</p><p>&nbsp; &nbsp; &nbsp;1/Rp₂ = 1/(R₂+R₃) + 1/(Rp₁ + R₆) + 1/R₇</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 1/(8 + 16) + 1/(2,4 + 5,6) + 1/9</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 1/24 + 1/8 + 1/9</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = (3 + 9 + 8)/72</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 20/72</p><p>&nbsp; &nbsp; &nbsp; &nbsp; Rp₂ = 72/20</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 3,6 𝞨</p><p>&nbsp; &nbsp; &nbsp; &nbsp; R_total = R₁ + Rp₂ + R₈</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 12 + 3,6 + 8</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 23,6 𝞨</p><p>&nbsp; &nbsp; &nbsp; Jadi, besar hambatan penggantinya adalah 23,6 𝞨</p><p>&nbsp;</p><p>b. 1/Rp = 1/(40 + 20) + 1/60</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 1/60 + 1/60</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 2/60</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 1/30</p><p>&nbsp; &nbsp; &nbsp; &nbsp; Rp = 30 𝞨</p><p>&nbsp; &nbsp; &nbsp; &nbsp; R_total= 30 + 10 + Rp</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 30 + 10 + 30</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 70 𝞨</p><p>&nbsp; &nbsp; &nbsp; &nbsp;Jadi besar hambatan penggantinya adalah 70 𝞨</p>