In Fig. `7.48`, each of the segments `( e.g., AE , GM, etc.)` has resistance `r`. A battery of emf `V` is connected between `A and C`. Internal resistance of the battery is negligible.

If a potentiometer circuit having gradient `k` is connected across the points `H and C`, the balancing length shown by the potentiometer is

In Fig. 7.48 , each of the segments ( e.g., AE , GM, etc.) has resistance r . A battery of emf V is connected between A and C . Internal resistance of the battery is negligible. What is the equivalent resistance of the system about A and C ?

In Fig. 7.48 , each of the segments ( e.g., AE , GM, etc.) has resistance r . A battery of emf V is connected between A and C . Internal resistance of the battery is negligible. What is the equivalent resistance of the system about A and C ?

In Fig. 7.48 , each of the segments ( e.g., AE , GM, etc.) has resistance r . A battery of emf V is connected between A and C . Internal resistance of the battery is negligible. Find the ratio of the power developed in segment AE to that in segment HM .

In Fig. 7.48 , each of the segments ( e.g., AE , GM, etc.) has resistance r . A battery of emf V is connected between A and C . Internal resistance of the battery is negligible. Find the ratio of the power developed in segment AE to that in segment HM .

In order to determine the internal resistance of a primary cell by means of potentiometer the emf of the battery connected across the ends of the potentiometer wire should be

A cell of emf (E) and internal resistance (r) is balanced across (l) length of potentiometer wire. If another cell of emf 2E and internal resistance (2r) is connected in parallel to the first cell , then the balancing length will be

A battery of emf 26V and internal resistance 0.4 ohm is connected to a resistance of 10ohm and a potentiometer wire of length 10m. What is the potential gradient on the wire if the resistance of the potentiometer wire is 5 ohm –

A potentiometer circuit has been set up for finding the internal resistance of a given cell. The main battery used across the potentiometer wire, has an emf of 2V and negligible internal resistance. The potentiometer itself is 4m long. When the resistance 'R_(1)' , connected across the given cell has values of (i) infinity (ii) 9.5Omega , the balancing length on the potentiometer wire are found to be 3m and 2.85m respectively. The value of internal resistance of the cell is

A potentiometer wire has length 10 m and resistance 20Omega . A 2. 5 V battery of negligible internal resistance is connected across the wire with an 80 Omega series resistance. The potential gradient on the wire will be