In the given potentiometer circuit length of the wire \( A B \) is \( 3 \mathrm{~m} \) and resistance is \( R=4.5 \Omega \). The length of \( A C \) for no deflection in galvanometer is \( \mathrm{W} \) ก. 📲PW App Link - https://bit.ly/YTAI_PWAP 🌐PW Website - https://www.pw.live