17 Ocak 2012 Salı

Ohm Yasası

Bir iletkende Potansiyel Farkı/Akım Şiddeti oranının daime sabit olduğu görülür (Ohm Yasası).Bu sabit değere o iletkenin direnci denir.

Bir iletkenin direnci=İletkenin iki ucu arasındaki potansiyel farkı İletkenden geçen akım şiddeti

Direnç=R

Potansiyel Farkı=V

Akım Şiddeti=I


Örnek Soru:

Bir elektrik devresinde uçlar arasındaki potansiyel farkı 12 volt,devreden geçen akım şiddet 3 amper olduğuna göre bu iletkenin direncini bulunuz.

R=?      V=12 Volt    I=3 Amper           R=V/I      ---> R=12/3=4 Ohm olarak bulunur.




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