Physics · 2024
JEE Main · 1 February 2024, Shift 2 · Q50
In a metre-bridge when a resistance in the left gap is 2 Ω and unknown resistance in the right gap, the balance length is found to be 40 cm. On…
In a metre-bridge when a resistance in the left gap is $\displaystyle 2 \Omega$ and unknown resistance in the right gap, the balance length is found to be $\displaystyle 40$ cm. On shunting the unknown resistance with $\displaystyle 2 \Omega$, the balance length changes by :
Official answer
From NTA’s final answer key for this paper.
(2)
22.$\displaystyle 5$ cm
More from Current Electricity
- 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
- The number of electrons flowing per second in the filament of a 110 W bulb operating at 220 V is: (Given e=1.6 × 10^-19 C )2024
- Refer to the circuit diagram given below. The heat generated across the 6 Ω resistance in 100 second is (α)/100 J. The value of α is ____. (Nearest…2026
- The resistance per centimeter of a meter bridge wire is r, with X Ω resistance in left gap. Balancing length from left end is at 40 cm with 25 Ω…2024
- In the given figure R_1=10 Ω, R_2=8 Ω, R_3=4 Ω and R_4=8 Ω. Battery is ideal with emf 12 V. Equivalent resistant of the circuit and current supplied…2024
- The equivalent resistance between the points A and B in the following circuit is x/5 Ω. The value of x is ____.2026
- A wire of resistance R is bent into a triangular pyramid as shown in figure with each segment having same length. The resistance between points A and…2025
- By what percentage will the illumination of the lamp decrease if the current drops by 20\%?2024
JEE Main 2024 Physics question, with the answer from NTA’s final answer key. Where our answers come from.