13 2 In a potentiometer setup when a secondary cell emf 2 V

Last updated: 6/25/2023

13 2 In a potentiometer setup when a secondary cell emf 2 V is balanced balance length of 10 cm obtained If another secondary cell of emf 4 V connected in series with initial secondary cell same polarity the new balance length will be 1 10 cm 2 20 cm 3 30 cm