UN SMP/MTs, 27 April 2012, Soal No 13-16

by : arbai kediri

13	B	Np/Ns    = Vp/Vs Vp            = Vs x Np /Ns                   = 220 x 75 / 220                   = 55 v
14	C	Kutub-kutub sejenis akan saling menolak, kutub-kutub berlainan jenis akan saling menarik. Sifat magnet sementara
15	D	W    = P t         = 40 x (8 x 60 x 60 s)         = 1.152.000 joule
16	D	1/Rp        = 1/6 + 1/4                   = 5/12 Rp            = 12/5                   = 2,4 ohm I                = V / (Rp + r)                   = 6 / (2,4 + 0,6)                   = 2 Ampere