Question

199 The so call in the circuit in the diagram has OV. The emf of the cell in the lower part of the circuit is 2.0V. Both cells have negligible internal resistance, AB is a uniform wire of length 10m and resistance 4.00 When the variable resistor is set at 3.20 the galvanometer shows zero current. Determine the length AC DA Shot on OnePlus 5.3 Electric cells enes now used to power watches, laptops, can and entire Learning objectives • Distinguish between primary lead

Answer 1

3.22 The length of Ab aim and resistance = 42 resistance per unit length so, Мөн 7 242/m. let the length of AC is x m . . Resistance of portion AC = 40 s. As the galvanometer shows no deflection, corrent through Ac is i= 2 Amp. so Tп оор О (3.2 + 4) i = 6 or; is 1/2 = 0.833 or = 0833 - 0.833 or, n = 0.6 m. in length of AC = 0.6m.