Practicing Success
Potentiometer wire of length 1 m is connected in series with $450 \Omega$ resistance and 2 V battery. If 2 mV/cm is the potential gradient, then resistance of the potentiometer wire is: |
$50 \Omega$ $45 \Omega$ $20 \Omega$ $25 \Omega$ |
$50 \Omega$ |
The correct answer is Option (1) → $50 \Omega$ |