Question

No.39 dan 40 gimana ya?

Answer 1

Nomer 39
L = 4 m, I = 2 A, B = 6 T,
maka
F = B · I · L
   = 4 m · 2 A · 6 T
   = 48 N
Arah gaya Lorentz-nya tgak lurus keluar bidang
Jawab " A

Nomer 40
η = 75%, Np : Ns = 10 : 2, 
Vp = 220 V, Ps = 60 W
maka
η = (Ps)/(Pp) · 100%
⇒ 75% = (60)/(Vp · Ip) · 100%
⇒ (60)/(220 · Ip) = 75/100
⇒ (220 · Ip) = 100/75 · 60
⇒ (220 · Ip) = 80
⇒ Ip = 80/220
⇒ Ip = 4/11 A
⇒ Ip = 0,3636 A

Jawab : A

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