TG EAMCET 30 Apr 2025 Shift 1 Paper

When an unknown resistance is connected in the left gap and a resistance of 15Ω is connected in the right gap of a meter bridge, the balancing point is found to be at 40 cm from the left end of the bridge wire. The emf of the battery of negligible internal resistance used in the circuit is 2 V . If the current drawn from the battery is 280 mA , the resistance of the bridge wire per unit length is