soal fisika cara cariknya

1/Rab = 1/3 + 1/(2 + 4)
1/Rab = 2/6 + 1/6
1/Rab = 3/6 = 1/2

Rab = 2 ohm

Beda potensial pd AB
= Rab/Rtotal × V
= 2/(2 + 1) × 18
= 2/3 × 18
= 12 volt