Jee Main
Current Electricity
JEE Main 2021 (Online) 25th July Morning Shift
MCQ+4 / -12021
In the given figure, there is a circuit of potentiometer of length AB = 10 m. The resistance per unit length is 0.1 \(\Omega\) per cm. Across AB, a battery of emf E and internal resistance 'r' is connected. The maximum value of emf measured by this potentiometer is :
