Physics · 2022
JEE Main · 25 July 2022, Shift 2 · Q55
In a potentiometer arrangement, a cell of emf 1.20 V gives a balance point at 36 cm length of wire. This cell is now replaced by another cell of emf…
In a potentiometer arrangement, a cell of emf $\displaystyle 1.20$ V gives a balance point at $\displaystyle 36$ cm length of wire. This cell is now replaced by another cell of emf $\displaystyle 1.80$ V . The difference in balancing length of potentiometer wire in above conditions will be
\_\_\_\_ cm.
Official answer
18
More from Current Electricity
- Resistances are connected in a meter bridge circuit as shown in the figure. The balancing length l_1 is 40 cm. Now an unknown resistance x is…2022
- A battery of 6 V is connected to the circuit as shown below. The current I drawn from the battery is:2022
- The ratio of the equivalent resistance of the network (shown in figure) between the points a and b when switch is open and switch is closed is x: 8.…2021
- The H amount of thermal energy is developed by a resistor in 10 s when a current of 4 A is passed through it. If the current is increased to 16A, the…2023
- A 4 V battery with internal resistance 1 Ω and a 6 V battery with 2 Ω internal resistance are connected to a resistor of 5 Ω as shown in fig. The…2021
- Two cells are connected between points A and B as shown. Cell 1 has emf of 12 V and internal resistance of 3 Ω. Cell 2 has emf of 6V and internal…2023
- The current density in a cylindrical wire of radius 4 mm is 4 × 10^6 Am^-2. The current through the outer portion of the wire between radial…2022
- For the two cells having same EMF E and internal resistance r, the current passing through the external resistor 6 Ω is same when both the cells are…2026
JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.