hambatan 20 ohm, beda potensialnya 40V digunakan selama 10menit. berapakag energi listriknya

Dik = R = 20 ohm
V = 40 V
t = 10 mnt × 60 = 600 s

Dit = W = ?

Jwb = Cari I dulu
I = V ÷ R
I = 40 ÷ 20
I = 2 A

W = I^2 × R × t
W = 2^2 × 20 × 600
W = 4 × 20 × 600
W = 80 × 600
W = 48.000 joule