Tolong nomer 4 dan 5

2.)I = Q/t
= 3600/1800
= 2A 1.) W = V.q = 800.15 = 12000joule

4][ usaha
q = 800 V
∆V = 15 V
W = __?

W = q ∆V
W = 800 • 15
W = 12000 J

5][ kuat arus
q = 3600 C
t = 30 menit = 30×60 s
i = __?

i = q / t
i = 3600 / (30×60)
i = 2 A